358 



HARVEY M. SMITH. 



treatment. For the smaller mammalian corpuscles it is an excel- 

 lent method. The one attempt which was made to use the wet 

 method gave sizes which checked fairly well with measurements 

 from dried smears. It was found to be difficult to use an oil 

 immersion objective on a wet preparation, and it was difficult 

 to find corpuscles which \vere not distorted. 



For convenience of reference for the reader, and to show how 

 the present measurements check with those given by other 

 workers, Table II. has been prepared to show the sizes of am- 



TABLE II. 



MEASUREMENTS ox AMPHIBIAN RED BLOOD CORPUSCLES AS MADE BY 



DIFFERENT WORKERS. 



phibian corpuscles according to the measurements of other 

 workers. The writer's measurements are not included here 

 because they are mostly on different species, the table would 

 therefore be much longer, and the measurements are found 

 elsewhere in this paper. 



2. It is possible that some of the animals studied by the writer 

 show abnormally small corpuscles on account of extreme starva- 

 tion. Necturus No. 6 and Rana pipiens No. 2 are cases with 

 extreme starvation and small cells. However, Necturus Nos. 7 

 and 8 and Rana pipiens No. 5 also underwent extreme starvation. 



