1895.] Scientific News. 407 
be given for those who are ready for it. There will be lectures and 
laboratory work amounting to about five and a half hours per day 
during the entire month. 
The laboratories and equipment of the University are placed fully 
at the disposal of the department, for the use of students. The tuition 
fee in the Department of Biology is ten dollars, with a special labora- 
tory fee of two dollars. Unusually good facilities are thus afforded at 
a merely nominal cost. 
The instruction will consist of three five-lecture courses in Botany, 
by Professor Macfarlane, Professor Halsted and Professor Wilson ; two 
five-lecture courses in Zoology, by Professor Cope and Professor Ryder’s 
successor ; lectures on special topics by eminent biologists; thirty hours 
laboratory practice in Biology, and five lectures by Mrs. Wilson on 
Biology from the standpoint of teachers in the elementary schools. 
Among the lectures on special topics are: Professor Liberty H. 
Bailey, of Cornell University, who will deliver two lectures on “ How 
Garden Varieties Originate: a Study in Evolution ;” Professor George 
L. Goodale, of Harvard University, who will deliver an address before 
the students of all departments on “ The Relations of Certain Plants to 
Political Economy ;” Professor Byron D. Halsted, of Rutgers College, 
whose lectures are ontlined below, and Professor Charles O. Whitman, 
of the University of Chicago. 
A new scientific society has been organized in the Jardin des Plantes, 
which will hold its meetings the last Thursday of each month. It is 
composed of the scientific personel of the Museum and has for an aim 
to bring about a knowledge and a cordial interest in each other’s work. 
It is thought that the discussion of papers presented to the society from 
various points of view of specialists, in the different fields of biology, 
will be both interesting and profitable. (Revue Scientifique, Feb. 
1895.) 
The Academy of Natural Sciences of Philadelphia have voted the 
Hayden medal to Professor G. A Daubrée, member of the Académie 
des Sciences in Paris, and Professor of Mineralogy in the Ecole des 
Mines. Prof. Daubrée’s researches into the intricate causes of crystal- 
line structure are important contributions to scientific knowledge as 
are also his expositions of experimental geology. 
The Belgian Academy of Science in Brussels has offered prizes to 
the value of six hundred francs for the best treatise on one of the fol- 
lowing subjects: (1) Researches on the number of chromosomes, be- 
