JUNE 21, 1901.] 
be made to two positions as laboratory assistant 
in physics, National Bureau of Standards, Treas- 
ury Department, one at a salary of $1,200 and 
the other at a salary of $1,400 per annum. 
On the same day an examination, which also 
will not require attendance, will be held for 
two assistant agrostologists in the U.S. Depart- 
ment of Agriculture, with salaries respectively 
of $1,600 and $1,400 per annum. The Depart- 
ment states that the positions for which this 
examination is held require thorough training 
and practical experience in subjects pertaining 
to grasses and forage plants and animal foods, 
and the management of grass lands and forage 
crops in the field. The subjects and weights 
are: 
Training and experience with special reference to : 
(a) Theory and practice in agriculture......... 25 
(b) Teaching or scientific research............... 10 
(c) Publications and editorial work............ 15 
50 
TNNERNS ocoonoyasdooson poopse nou sccopsbsan;enDoAEnSsasedaoD5905003 30 
Plan (to be devised by the applicant) for experi- 
ments to solve any forage problem ................. 20 
NY ococo050 930040 cansc0 bon noSoCOnOSANDSASARoENANDODNS 100 
On the same day there will, further, be an 
examination, not requiring attendance, for the 
position of scientific aid with a knowledge of 
statistics in the Department of Agriculture. 
This examination will consist of the follow- 
ing subjects : 
College course (with bachelor’s degree) 
Or its equivalent ................0ceseseeeeees 40 
Post-graduate work and special qualifi- 
GRIROME): cooosaccasooaescobesacoqoobqbocHsGaceGeebe 30 
Thesis or other literature ...................5+ 30 
100 
Applications will not be received from other 
than graduates of colleges receiving benefits 
from grants of land or money from the United 
States, unless it is shown that the applicants 
have pursued courses of instruction having an 
economic bearing which will qualifiy them for 
the work of the Department of Agriculture. 
Applicants must show the scope of the studies 
pursued and the length of time devoted to them, 
the standing in such studies, especially with 
regard to the subject of statistics, and the 
special qualifications which they have for work 
SCIENCE. 
995 
upon this subject. They must also submit a 
thesis upon the subjects of statistics, or in lieu 
thereof such other literature on the subject as 
may have been published over their own sig- 
nature. ‘The salary of the position is $40 per 
month and no person will be permitted to serve 
as a scientific aid for more than two years. _ 
Scientific aids who pass in an open competitive 
supplementary examination in some technical 
or scientific subject or subjects which may be 
held will be eligible to certification from such 
supplementary register to higher positions 
within the classified service, regardless of their 
services as scientific aids. 
THE AMERICAN ASSOCIATION. 
SECTION A. MATHEMATICS AND ASTRONOMY. 
THE officers of the section, Professor James 
McMahon, chairman, and Professor George A. 
Miller, secretary, have received the following 
titles for presentation at the Denver meeting. 
They have not, however, yet been approved by 
the Sectional Committee : 
‘A Summary of the Salient Effects due to the Secu- 
lar Cooling of the Earth’: Professor R. S. WoopwAgp, 
Columbia University. 
“The Energy of Condensation of Stellar Bodies’: 
Professor R. S. WooDWARD. 
‘Supplementary Report on Non-Euclidean Geom- 
etry’: Professor GEORGE BRUCE HALSTED, University 
of Texas. 
“On the Application of the Fundamental Laws of 
Algebra to Infinite Series’: Professor FLORIAN 
Cayort, Colorado College. 
“Conditionally Convergent Series whose Product is 
Absolutely Convergent’: Professor FLORIAN CAJORI. 
“Report on Continuous groups’: Professor H. B. 
NEwson, Kansas University. 
“The Great Meteor of December 7, 1900’: Pro- 
fessor H. A. Howe, University of Denver. 
“Note on a Direct Solution of Kepler’s Problem ’: 
Professor H. A. HOWE. 
‘The Next Appearance of Eros’: Professor H. A. 
HOWE. 
‘On Systems of Isothermal Curves’: Professor L. 
E. Dickson, University of Chicago. 
‘On the Modular Function’ Associated with the 
Irrationality s?=2(z—1) (e—2) (2—y)’: Dr. J. 
I. HutcuHinson, Cornell University. 
‘The Physical Bases of Long-Range Seasonal Fore- 
casts’: Professor CLEVELAND ABBE, U.S. Dept. of 
Agriculture, Weather Bureau. 
