Journal of Applied Microscopy. 



599 



The amplification being one thousand diameters and the scale being in 

 millimeters, the reading is directly in micro-millimeters. 



The accompanying photo-micrographs will demonstrate better than any 

 description, the value of the method. 



E. H. Wilson, M. D., Director. 

 R. B. F. Randolph, A. C, Associate Director. 

 Department of Bacteriology, Hoagland Laboratory, Brooklyn, N. Y. 



An Apartment Incubator for Student Use.''' 



One of the difficulties in teaching bacteriology in the laboratory to a large 

 class of students, is the procuring of sufficient incubator room. In our ele- 

 mentary course it has been found necessary for each student to have consider- 

 able incubator shelf space for his various cultures, including boxes for holding 

 test-tube cultures, Petri dishes, and fermentation tubes. An area of about 



Fig. I. 



A photograph of incubator as originally 



built, Weisnegg pattern. 



Fig. 2. 

 A photograph of incubator with apartment 

 drawers. 



eighty square inches has been found to be the minimum space which can be 

 assigned to each. In fitting up our laboratory for students this difficulty was in 

 a measure anticipated, and two large incubators built on the Weisnegg pattern 

 were provided. These were found to afford ample shelf room for our present 

 class, but the difficulty of utilizing the rear half of each shelf soon became 



*Presented at the meeting of the American Microscopical Society, Columbus, August, i! 



