GENERAL INFORMATION

Deadlines
Abstracts due March 6, 1998
Student Travel Grant Applications dues March 6, 1998
Advance Registration due June 1, 1998
Hotel Reservations due June 18, 1998

Meeting Format
The meeting will begin with workshops on Saturday, July 18, followed by lectures and poster sessions from Sunday, July 19 to Thursday, July 23. Scientific sessions will run until approximately 5:30pm on Thursday. Judging for the Pauling and Oxford Cryosystems Poster Awards will be completed after the poster session on Tuesday, July 21. Awards will be presented at the Annual Banquet on Wednesday, July 22.

Registration
All attendees, including invited speakers, must register. All registered participants will receive a conference bag and materials, including a conference badge securing admission to the scientific sessions, Opening Reception, Midweek Mixer and the exhibition. General registration will begin on Saturday, July 18, in the Hyatt Ballroom Foyer. However, registered workshop participants should pick up their materials on Friday, July 17, 6:00pm-9:00pm. Participants with special needs arising from disabilities are invited to contact the Registrar to discuss appropriate accommodations. Advance registration forms must be postmarked on or before June 1, 1998, to be eligible for reduced registration fee. On site registration will be accepted at the higher rate. Registrations received via fax must include credit card payment.
 Registration Fees By June 1st After June 1st
Regular Member $225.00 $300.00
Retired Member $90.00 $90.00
Student Member $90.00 $90.00
Non-Member* $300.00 $375.00
Student Non-Member* $120.00 $135.00
Accompanying $65.00 $75.00
One-Day Member $150.00 $225.00
One-Day Non-Member $195.00 $270.00

Advance registration forms must be postmarked on or before June 1, 1998, to be eligible for reduced registration fee. On site registration will be accepted at the higher rate. Registrations received via fax must include credit card payment. * The difference in member and nonmember fees can be applied to new ACA membership for 1998 if an application is submitted along with the registration form and payment.

Payment
Payment of fees must accompany all registration forms and must be U.S. dollars. Payments may be made with VISA or MasterCard, or U.S. checks drawn on a U.S. bank. Purchase orders will not be accepted. Fees for workshops and the banquet are separate from the registration fee but should be included in the total payment.

Cancellation Policy
Cancellations and requests for refunds should be made in writing to the Registrar. For cancellations received before June 1, 20% of the total remittance will be deducted; after June 1 and before June 20, 50% of the total remittance will be deducted. Fees will not be refundable after June 20, 1998.

Travel Grants
Limited funds are available to help students and young scientists in attending the 1998 meeting by contributing toward travel and related expenses. Preference will be given to those presenting a paper. Interested parties should return the application form available on the web site, to ACA headquarters no later than March 6, 1998.

Headquarters Hotel
Accommodations - Hyatt Regency Crystal City
A large block of rooms has been reserved at the Hyatt Regency Crystal City. The room rate is $115.00 per night plus 9.75% tax for single, double, triple or quad accommodations. Each room has one king size bed or two double beds.
Reservations must be received at the Hyatt Regency by June 18, 1998. After this date, rooms may still be available but not necessarily at the convention rate. Use the enclosed form, call 1 800-233-1234, or fax (703) 413-6727. Reservations can also be made at the Hyatt Regency web site at www.hyatt.com. Please be sure to identify yourself as an ACA Meeting Participant so you will be eligible for our room rate of $115.00.
Confirmation of your reservation will be sent to you directly by the hotel within 30 days of receipt of your request. The Hyatt will acknowledge receipt of your request and deposit.
Reservations must be guaranteed by one night's deposit or by credit card ($115 + tax = $126.21 U.S. funds). Failure to cancel by 6:00pm on the day of arrival will result in one night's room and tax billed to your credit card, or forfeit of the deposit. Acceptable means of deposit include check, money order, American Express, Diners Club, Carte Blanche, MasterCard, Visa, and Discover.
Changes in your departure date after check-in will result in a $25.00 early departure charge.
Rooms will be assigned on a first-come, first-served basis. Room type requests are subject to availability. Check in time is 3:00pm. Check out time is 12:00 noon.
Any changes or cancellations should be made through the Hyatt Reservations Department. Should a guest cancel a reservation, the deposit is refundable if notice is received at least three days (72 hours) prior to arrival and a cancellation number is obtained.

Travel
By air: The Washington, DC area is served by three major airports, National (DCA), Dulles International (IAD), and Baltimore-Washington International (BWI). All major car rental services are represented at all three airports. Check the local information link on the meeting web page for maps and other transportation details.
The
Hyatt Regency Crystal City is proud to offer Complimentary Shuttle service to and from Washington National Airport. The Shuttle hours are 6:00am - 12 Midnight, seven days a week. There is a courtesy phone located in the baggage claim area at National Airport which connects you directly to the Transportation Department. If you wish to take a cab to or from the airport, the approximate cost from National is $6.00, approximate cost from Dulles is $45.00 and approximate cost from BWI is $65.00. Taxi cabs are easily accessible outside the baggage claim area of each airport.
By rail: Amtrak serves the Washington metropolitan area. There is direct subway service from Union Station (red line) to the Crystal City station.
By road: DC is served by Interstate highways 66, 70 and 95. Maps and road directions are available on the local information web page.
Use of Public Transit: The DC area Metro system offers all-day visitor passes at a reduced rate. Passes are available for purchase at the Hyatt Regency Concierge Desk. Most major tourist attractions are easily accessible by public transportation. The Complimentary Hyatt Shuttle is available to drop you off at the closest Metro Station. Out of town automobile drivers may find the Washington street grid and parking regulations very confusing, so that use of public transit is strongly advised. How to use the Metro: Metro station entrances are marked by tall dark columns with a large "M" on each side. Metro lines are color-coded: Blue, Green, Orange, Red and Yellow. Maps in the stations and inside the trains also help you find your way. Rush hour fares are charged weekdays between 5:30 - 9:30 a.m. and 3 - 8 p.m. Off-peak fares are charged at all other times. Fares are posted in all Metro buses and at all Metro station kiosks. Up to two children 4 years old or younger ride free when accompanied by a paying passenger. On Metro rail, you need a magnetically encoded fare card to ride. Fare cards can be purchased at any Metro station for as little as $1.10. If you are traveling late at night, check the signs on the station manager's kiosk for the time the last trains leave the station. At many stations, the last train departs before midnight. Allow at least five minutes to get to the platform before the last train is scheduled to leave the station.

Social Program
The Opening Reception will be held at 8:00pm on Saturday, July 18, in the Regency Ballroom at the Hyatt. The YSSIG Mentor/Mentee Dinner will take place on the evening of Sunday, July 19. The Annual Midweek Mixer organized by the YSSIG (sponsored in part by Charles Supper Company, Inc.) will be on Monday, July 20, beginning at 8:00pm. Wednesday, July 22, will feature the Annual Banquet, with pre-dinner drinks at 6:30pm and the banquet from 7:30pm - 10:00pm. The banquet will be held in the Hyatt Ballroom. Tickets will cost $25 for registered students and $50 for all others; this is separate from the registration fee. Pre-ordered vegetarian meals will be available. Please indicate your preference on the registration form.

Accompanying Guests Program
Spouses and other family members and guests may register in advance. Use the regular registration form and add the name of your guest(s) as you wish it to be printed on the badge. The accompanying guest registration fee includes admission to all receptions and the exhibits; it does not include admission to the scientific sessions. A breakfast is scheduled for accompanying guests on Sunday, July 19.

Organized Tours
A series of tours has been organized by a local tour company, Heritage Tours, Ltd. The tours are available to registered scientists and accompanying guests. Buses will depart and return to the Hyatt Regency. To guarantee a place on any of these tours, it will be necessary to register before July 3, using the Tour Registration Form. Tours will go ahead only if a minimum of 30 people register in advance.

Saturday, July 18
Tour #1
The Best of Washington
Our afternoon begins with a stop at the newly dedicated Franklin Delano Roosevelt Memorial located along the banks of the world famous Tidal Basin. We continue on to the Smithsonian's National Museum of Natural History for a special stop at the newly restored Janet Annenberg Hooker Hall of Geology, Gems and Minerals. This renovated exhibition hall features hundreds of treasures, including the Hope Diamond, the Hooker Emerald Brooch and the Star of Asia Sapphire, (weighing 330 carats). The day concludes with a visit to the Smithsonian's Museum of American History highlighting the exhibit on the political role and public image of the first ladies of the nation. We will have the opportunity to view the newly restored section on the collection of First Ladies' memorabilia and their personal influence on the presidency of their spouse.
Time: 1:00pm-5:00pm
Cost: $30.00

Sunday, July 19
Tour #2
The Best of Washington (Repeat of Tour #1)
Time: 1:00pm-5:00pm
Cost: $30.00

Monday, July 20
Tour #3
Washington - Both Sides of the Potomac
The morning begins as we cross the Potomac River to Virginia and return to the era of George and Martha Washington. The ordered walks, lawns, splendid trees and gardens all reflect the case and planning which Washington lavished on his beloved estate, Mount Vernon. The Georgian mansion has received meticulous attention in restoration and is very close to the form in which Washington left it. Then travel to Alexandria, Washington's home town. Here in Old Town, a riding tour includes sites such as Gadsbys Tavern, Carlyle House, Ramsay House, Captain's Row and the Lee Boyhood Home. Time for lunch and shopping. Before the day ends, a visit to Arlington National Cemetery, witness the "changing of the guard" at the Tomb of the Unknown Solider and a stop at the grave of John F. Kennedy, with its eternal flame. Price includes admission to Mount Vernon and Arlington Tourmobile.
Time: 9:00am-4:00pm
Cost: $45.00

Tuesday, July 21
Tour #4
Washington by Night
When the sun goes down, Washington lights up, exposing an elegant and entirely different city from the one you have come to know by day. Enjoy a friendly and professional narration by our expert tour guide as our luxury motorcoach escorts you past many of the magnificent monuments bathed in spotlights: White House, Capitol's Dome, Washington Monument and reflecting pool. Stops include the National Cathedral, Embassy Row, Union Station, where dinner may be had on your own and the recently dedicated Franklin Delano Roosevelt Memorial. The evening concludes with a stop at the John F. Kennedy Center for the Performing Arts for a tour of the Hall of Nations, Hall of States and Grand Foyer. Price includes donation to the Cathedral.
Time: 6:00pm-11:00pm
Cost: $30.00

Wednesday, July 22
Tour #5
Best of Baltimore
Next door to Washington and just a short ride away by deluxe motorcoach, is an exciting day of history, shopping, sight-seeing, and endless taste treats. This tour is a combination of some of the most historic and the newest attractions of this old, but very much alive and revived American city. Tour begins with a visit to Fort McHenry, the star-shaped fort and national landmark and historic shrine. Visit Camden Yards, Baltimore's "state of the art" new baseball stadium with a special behind the scenes arranged tour. The focal point of the area is the much acclaimed European-style market place, Harborplace. This year round festival in two glass-enclosed pavilions houses over 140 shops, restaurants and eateries, for dining, browsing and shopping. Price includes entry to Camden Yards and Ft. McHenry.
Time: 9:00am-3:30pm
Cost: $45.00

D.C. Attractions
Some of the many well known attractions in Washington, DC and the surrounding area are listed below. For a more detailed list contact the `Convention and Visitors Association,' 1212 New York Ave. NW #600, Washington, DC, Ph (202)789-7000. Web links to specific activities at the various attractions and an expanded list of attractions is available on the local meeting web site: http://www.nist.gov/aca_98

National Mall
Between Constitution & Independence Aves. SW. A splendid green park area extending approximately two miles from the U.S. Capitol to the Washington Monument. Lining either side of the park are several of the Smithsonian Institution museums, National Archives, National Gallery of Art and U.S. Botanical Gardens.

U.S. Capitol
Under the magnificent white dome, senators and representatives meet to shape U.S. legislative policy.

Washington Monument
15th & Constitution Ave. NW. One of the tallest masonry structures in the world, this majestic obelisk was dedicated in 1885 to the memory of the first U.S. president.

National Museum of Natural History
10th & Constitution Ave. NW. Outstanding new exhibit on Minerals including the 45.5-carat Hope Diamond. In addition, the museum houses dinosaur fossils, the Insect Zoo and the world's largest African bush elephant.

National Air & Space Museum
6th & Independence Ave. SW. The world's most visited museum houses the Wright Brothers' 1903 Flyer, Lindbergh's Spirit of St. Louis, Apollo 11 lunar command module & an incredible collection of aviation and space technology treasures.

National Zoological Park
3000 block of Connecticut Ave. NW. A collection of more than 3,000 exotic animals, birds and reptiles, including the giant panda Hsing-Hsing.

Washington National Cathedral
Massachusetts & Wisconsin Aves. NW. A 14th century-style Gothic cathedral, garden and shops set on 57 acres. Observation Gallery offers a magnificent view of Washington and surrounding area.

White House
1600 Pennsylvania Ave. NW. The home of every U.S. president except George Washington.

United States Holocaust Memorial Museum
100 Raoul Wallenberg Place SW. Located next to the Bureau of Engraving and Printing, this somber and moving museum tells the story of the Holocaust through artifacts, films, photographs and oral histories.

National Gallery of Art
4th & Constitution Ave. NW. Permanent collection of European and American paintings, sculpture, decorative arts and works on paper, plus changing exhibition of art from around the world.

Hirshhorn Museum & Sculpture Garden
7th & Independence Ave. SW. Collection of 19th and 20th-century painting and sculpture in a striking cylindrical structure and an adjoining outdoor garden.

The Washington Post
1150 15th St. NW. Free walking tours of the plant cover step-by-step production and distribution of the newspaper.

George Washington's Mount Vernon Estate & Garden
George Washington Parkway, Mount Vernon, VA. Stretching over 500 acres overlooking the Potomac River, just 16 miles from Washington DC. Tour the mansion, George Washington's tomb, 2 museums, 12 outbuildings, gardens and gift shops.

Alexandria, VA
Founded in 1749 as a tobacco seaport, the city is home to historic homes, a waterfront museum, art galleries, specialty shops, ethnic festivals and great restaurants.

Luray Caverns
U.S. 211 West, P.O. Box 748, Luray, VA. The largest and most popular caverns in eastern America, This U.S. natural landmark is 90 minutes southwest of Washington, near Skyline Drive and Shenandoah National Park.

Potomac Mills Outlet Mall
2700 Potomac Mills Circle, Prince William, VA. One of the world's largest value/outlet malls with more than 220 outlet stores, 3 sit-down restaurants & food court under one roof.

Attendees and their guests should check the ACA98 Concierge Desk (near the poster hall) for free tickets to many of Washington's most interesting attractions.


IUCr Scientific Freedom Policy Statement
The Organizing Committee of the 1998 ACA Annual Meeting shall observe the basic policy of nondiscrimination and affirms the rights of scientists throughout the world to adhere or to associate with international scientific activity without restrictions based on nationality, race, color, age, religion, political philosophy, ethnic origin, citizenship, language, or sex, in accordance with the Statutes of the International Council of Scientific Unions. At this meeting no barriers will exist which would prevent the participants of bona fide scientists.