ANNIVERSARY ADDRESS. 11 
free of expense. Competitors are requested to write upon foolscap. 
paper—on one side only. A motto must be used instead of the 
writer’s name, and each paper must be accompanied by a sealed 
envelope bearing the motto outside, and containing the writer’s. 
name and address inside. All communications to be addressed 
to the Honorary Secretaries. 
Abercromby Fund.—It will be remembered that at the Decem- 
ber meeting of last Session, a sum of £100 was placed in the 
hands of our Council by the Hon. Ralph Abercromby, with the 
object of promoting the study of some phases of Australian 
weather. Since then a Committee has been appointed consisting — 
of the Hon. Ralph Abercromby, Professor Liversidge, Professor 
David, and Mr. Russell, to carry out the donor’s wishes, and one 
subject for a prize essay has been chosen and competition invited 
under the following conditions :— 
The distinguished Meteorologist, the Hon. Ralph Abercromby, 
has given to the Royal Society of. New South Wales the sum of 
£100, which is to be offered as prizes, with the object of bringing 
about exhaustive studies of certain features of Australian weather. 
So far only one feature has been selected, and a prize is now 
offered of £25 for an exhaustive study of our well known 
“southerly burster.” It is understood that no essay which does. 
not deal fully with the following points will be considered :— 
1. The motions of the various strata of clouds for some hours. 
preceding, at the time of, and following the “burster.” 2. The 
weather conditions which lead up to and follow the “burster,” 
with weather charts of Australia for the day of and day following 
it. 3. The general conditions which modify the character of the 
“)burster.” 4. The area of the “burster” and its track. 5. 
Barograph traces shewing the changes of pressure during the 
“burster.” 6. The direction and character of wind preceding it 
7. The relation of ‘“‘bursters” to rainfall. 8. The essay must 
not exceed fifty pages of foolscap. 9. The essay must be sent in 
not later than 31st March, 1894. 10. A photograph of each 
“burster ” described, giving a characteristic view of the cloud-roll: 
