1895.]° m Scientific News. 611 
it is hoped to survey a base line which can be utilized in studying the 
variation of the same species throughout their distribution. This 
study should be carried on for a series of years, or at least be repeated 
at definite intervals to determine the annual or periodic variation from 
the mean. A comparison of this variation in the same animals in 
other similarly limited and well circumscribed areas, and in the correla- 
tion of the variation of a number of species in these areas will demon- 
strate the influence of the changed environment, and will be a simple, 
inexpensive substitute for such expensive experimental work. 
Instruction.—Courses of instruction which ordinarily cannot be 
given in the University’s laboratories during the college year will be 
offered and credit given on the University’s records. The courses are 
as follows: 
1. Elementary work. The class will collect, preserve and study a 
series of animals occurring in the neighborhood of the station. Em- 
phasis will be laid on the nature of the freshwater fauna and the cor- 
relation and adaption of organisms. The entire day will be given to 
collecting excursions, laboratory work and lectures. Individual work 
Saturdays. Nospecial preparation is needed. (Teachers may collect 
material for their classes, but alcohol for this purpose will not be furn- 
ished). 
2. Embryology and life history of fishes and other local forms. 
3. Special investigations in the variation of non-migratory vertebrates 
and survey of the physical and biological conditions of Lake Wawa- 
see, 
Courses 1 and 2 will extend through five weeks beginning June 
25th. Course 3 may extend at the pleasure of the investigator till 
the middle of September. 
LecrurEes.—A number of biologists will be present for a shortjtime, 
several of whom have promised to lecture. Among those who will be 
present are: J.C. Arthur, Purdue University, Slime molds, the fun- 
gous-like animals; A. W. Bitting, Purdue University ; E. P. Boyer, 
Chicago High Schools, Biology in the High Schools; R. E. Call, 
Louisville Manual Training High School, Freshwater molluscs; W, 
S. Blatchley, State Geologist, Insects and how to collect them; G, 
Baur, Chicago University, How to study Variation; J. M. Coulter, 
President Lake Forest University, (Subjects not yet annonnced); B 
W. Evermann, U. S. Fish Commission, Field work of the U. S. Fish 
Commission; The Red Fish; P. Kirsch, Indiana State Fish Com- 
missioner; L. J. Rettger, Indiana State Normal School, Some topic 
in physiology ; rere Swain, President Indiana University, (Subject 
not yet announ 
