262 IOWA ACADEMY OF SCIENCES. 



NOTES ON THE BACTERIOLOGICAL ANALYSIS OF 

 WATER. 



BY L. H. PAMMEL. 



The recent epidemic of typhoid fever at the college is of 

 interest to us and especially the methods now in vogue 

 with reference to the examination of water for various 

 organisms. During the recent epidemic and previously the 

 well waters in the vicinity of Ames as well as the 

 college water supply were examined at various times. An 

 examination has also been made of water coming from 

 wells of the parties who have furnished milk to the college. 

 It should be stated here that this report is not completed 

 owing to the fact that some of the species have not been 

 sufficiently determined. From the nature of the case it 

 requires a great deal of patient and careful work to run 

 out the different species, so that the biological examination 

 was not completed. Thanks are due to Mr. F. W. Faurot, Mr. 

 A. D. McKinley, Mr. H. H. Thomas, Miss Nellie Nicholas, 

 Miss Estella Paddock, and Mr. L. R. Walker for assistance 

 in carrying out this work. 



In the paper on the Iowa State College Sewage Disposal 

 Plant will be found a brief note on the water of the deep 

 well previous to this spring. Examinations have been 

 made from time to time, and as a result of our work, we 

 found that the water during the winter months varied from 

 no bacteria to 50 per cubic centimeter, thus showing an 

 unusually good supply of water. 



A Marston, J. B. Weems and L. H. Pammel. The Iowa State College 

 Sewage Disposal Plant and Investigations. Proc. la. 

 Engineering Soc. 1900. Contr. la. State Coll. Argrl. & 

 Mech, Arts. 1:19. 



