Biological Station 



bottom outlets is proved. Carp Creek is supplied from Douglas 

 Lake in this manner. 



''Thorough analysis of the waters from every angle having bio- 

 logical bearings together with the comparative studies made by Doc- 

 tor Ellis on neighboring lakes and rivers will prove to be of great 

 scientific and economic value. Some of the problems which suggest 

 themselves in connection with pearl mussels and fishes have an im- 

 mediate practical bearing. 



"Finally, there is also a terrestrial fauna to be reckoned with. 

 Insects of all sorts are abundant. Mammals are not common. With 

 respect to birds, Doctor R. M. Strong makt- s the following statement : 



'The bird life is not so rich about the Station as at some places, 

 nevertheless, the location has important ornithological attractions. A 

 number of species breed here which are known to the majority of 

 ornithologists only as migrants. 



'There are densely wooded bogs, hardwood forests, extensive 

 aspen areas, settlements, meadows, and roadsides, all available in a 

 single half-day trip. Field trips can be arranged which will furnish 

 enough birds to keep a class profitably occupied if the material is 

 properly used. 



'Research problems may be taken up to advantage. Behavior 

 studies in the field and with captive birds are practicable. Certain 

 types of ecological work are also feasible. Intensive studies of sin- 

 gle pairs of breeding birds both during and after the nesting period 

 are desirable. Much can be done on the life histories of certain 

 species which do not breed farther south and are not well known'." 



Concerning the possibilities of work on parasites of animals 

 Doctor W. W. Cort who has spent several summers at the Station 

 reports as follows : 



"Douglas Lake is an excellent place to study parasites. The 

 lake is small enough to give a ready access to the host animals. 

 Studies and collections have already shown that there is an abundance 

 of material waiting to be worked up. The fact that twenty different 

 kinds of larval trematodes could be collected from the lake when 

 not even all the hosts available were examined shows what a wealth 

 of material of this group is present. When it is considered that 

 these larval forms are new and for not one of them is the adult 

 stage definitely known, some idea can be gained of the numbers of 

 problems which are waiting solution. Of the cestodes, nematodes 

 and acanthocephala of the region even less is known. The nearness 

 to Burt Lake and the fish and birds of the Great Lakes increases 

 the variety of possible host animals.. From all aspects the Douglas 

 Lake region offers excellent opportunities for the development of 

 research and instruction on the animal parasites." 



The scientific possibilities suggested by the flora of the region 

 are discussed by Doctor F. C. Gates in his report to the director 

 as follows : 



