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completed manuscript, accompanied by thirty folded sheets setting forth im 
tabular form the distribution of the various species at each substation and also: 
throughout the Station field for the different months of the year. This report 
was finished last September and will be printed without delay. 
Dr. Kofoid has lately filed a report, which is about to go to press, on methods 
and apparatus in use in plankton work at the Station, accompanied by seven 
illustrative plates. He has in hand six other papers, which will doubtless be 
ready for publication before the end of the current fiscal year. These will 
include reports on the local distribution of the plankton in the Illinois River 
and its adjacent waters, on the sources of error in the plankton method, on the 
plankton of the river during the years 1894, 1895, and 1896, on the plankton 
of Phelps Lake,—a body of water of the ephemeral type,—an article on 
-Trochosphera, and one on Cotylaspis insigne—a remarkable parasite of the 
river clams. 
Professor Smith has under way a general report on our oligocheete collec- 
tions, to consist of about fifty pages of text with several plates. This report 
will contain a synoptic Key and illustrated descriptions of species for use in 
identifying forms occurring in the State. 
Mr. Hart, Station Entomologist, and Mr. J. G. Needham are working con- 
jointly upon a report on the dragon-flies of the Station waters and their viein- 
ity and a list of the mollusks with biographical and cecological notes is in 
course of preparation by Mr. Hart. 
Two senior students of the zodlogical department of the University, Mr. E. B. 
Forbes and Mr. F. W. Schacht, are engaged in thesis investigations, under 
the personal supervision of the Director of the Station, which will result in. 
_ the preparation and publication of papers on entomostracan groups, one the 
Cyclopide, the other the Centropagide, of North America, including of course 
_ the Station collections. 
I have myself undertaken to prepare, and have nearly finished, a compre- 
hensive article on the Crustacea of the Biological Station field, with analytical 
synopses of all the groups and illustrative figures for the use of the student of 
our aquatic fauna. 
A paper on the planarian worms found at Havana is now reported as prac- 
tically ready for the press in the hands of Dr. W. M. Woodworth, of Harvard 
University. Articles in course of preparation by visiting investigators are 
‘The Mycetozoa collected near Havana, Illinois, during the summer of 1896,’’ 
_ by H. C. Beardslee, of University School, Cleveland, Ohio, and ‘“*Statistical 
_ Record of the Trematoda Parasitic in the Unionide,”’ by Professor H. M, 
Kelly, of Cornell College, Lowa. 
The excellent work done by the Station Artist, Miss Lydia M. Hart, in illus- 
tration of nearly all the papers of the foregoing list, is deserving of particular 
mention. One hundred and three drawings have been made by her of new or 
_ otherwise interesting animal forms, besides several drawings of pieces of ap- 
; paratus and other features of the equipment. 
