1895.] MICROSCOPICAL JOURNAL. 277 



A practical method of referring units of length to the 

 wave length of sodium light, by Prof. Wm. A. Rogers, of 

 Waterville, Me. 



Some peculiarities in the structure of the mouth parts 

 and ovipositor of Cicada septendecim, by Prof. J. D. 

 Hyatt, New Rochelle, N. Y. 



The lateral line system of sense organs in Amphibia, 

 by Dr. B. F. Kingsbury, Defiance, 0. 



Comparison of the fleischel, the gower and the specific 

 gravity method of determining the percentage of hemo- 

 globin in blood for clinical purposes, by F. C. Busch and 

 A. T. Kerr, Jr., Buffalo, N. Y. 



The history of the sex-cells from the time of segrega- 

 tion to sexual diff"erentiation in Cymtogaster, by Prof. 

 C. H. Eigenmann, of Bloomington, Ind. 



WEDNESDAY AFTERNOON. 



The afternoon was devoted to the inspection of the 

 library and other University buildings. One of the 

 most enjoyable incidents was the witnessing of the 

 making of micrometers with a Rogers ruling engine in 

 the department of physics. For this the society is 

 indebted to Prof. Moler of that department. 

 WEDENSDAY EVENING. 



There was a large attendance at the evening session, 

 which was held in the botanical lecture room, the occa- 

 sion being the annual address of the President, Prof. 

 Simon H. Gage of Cornell University. Prof. Gage took 

 for his topic "The Processes of Life Revealed by the 

 Microscope; A Plea for Physiological Histology." 



As this paper will pxobably be published in full in a 

 subsequent issue of the Journal, we give only a few 

 brief extracts here : 



"It is characteristic of the races of men that almost at 

 the dawn of reflection the first question that presses for 



