82 



Wallace Craig, B. L., Assistant of the Illinois State Laboratory of Natural 

 History, Havana, 111. 



Miss Louise S. Dewey, B.S., Fellow in Physiology, University of Illinois, 

 Urbana, 111. 



C. C. Faust, Superiutendedt of Schools, Mansfield, ill. 



J, F. Garber, A.B., Instructor in Biology and Mathematics, High School, 

 Houston, Texas. 



J. T. Johnson, Teacher of Biology, High School, Galesburg. 111. 



Miss Nellie 1. Kofoid. B. S., Science Teacher, High School, DeKalb. 111. 



J. E. Meharry, Student, University of Illinois, Tolono, 111. 



Mrs. Sara E. Pierce, Pi'incipal of High School, Havana. 111. 



W. E. Praeger, Student, University of Illinois. Keokuk. la. 



L. H. Pratt, Teacher, Clear Creek, 111. 



F. W. Schacht, M.S., Principal of High School, Chicago Heights. 111. 



Otto Widmann, Student, University of Illinois, Old Orchard. Mo. 



C. W. Youngs, B.S., Assistant in Botany, University of Illinois, Urbana, 

 111. 



The total number enrolled in the School was fifteen. Of these nine are 

 teachers of natural science in this and other states. Three of those in 

 attendance are now connected with the University as assistants or fellows. 

 Nine of the fifteen students of the school have been or are connected 

 with the University, three are now under graduates, and six have re- 

 ceived their diplomas, two of them remaining as graduate students. 

 This summer school of biology might be made a very efficient means 

 of attracting attention to the facilities which the L'niversity offers for 

 instruction in the sciences, since students availing themselves of the oppor- 

 tunities of the summer school are apt to be drawn to the University- for 

 further work. 



Although the number in attendance was not so large as had been expected, 

 still certain features of the enterprise are encouraging. Among these is the 

 cordial response of the citizens of Havana to those needs of the school which 

 can be supplied only by local support. There was no difficulty in securing 

 pleasant and comfortable accommodations for all in attendance: and a much 

 larger number would not have exhausted the facilities offered. From its 

 beginning the station has received generous treatment at the hands of the 

 business men of the town. Indeed, the granting of a site for a station build- 

 ing upon the public river front on the bluff overlooking the river has been 

 urged in the local press. A second encouraging feature is the satisfaction 

 expressed bj' those in attendance with the work they have been able to accom- 

 plish in Havana, and the frequently repeated desire to continue it when 

 opportunity offers. 



Very respectfully yours, 



C. A. KOF(.iID. 



Superintendeut of Biological Station. 



REPORT ON WATER ANALYSES. 



To the Director of the Laboratory. 



Sir: During the two years just passed the number of water samples, from 

 the streams and lakes in the vicinity of Havana, Illinois, which were exam- 

 ined by the State Water Survey as conducted by the department of Chemistry 

 of the University, were as follows: Illinois river and Spoon river 102 

 samples from each, these being regular weekly collections from each of these 

 sources. The collections from Quiver lake number, all told. 2S. and a like 

 number has been taken from Thompson's lake. The waters from these 

 different sources have been subjected to the regular sanitary analysis and 



