PLATE XVII. 
Fig. 1. — ADIPOSE TISSUE OF Ox, San Francisco, 1882; magni- 
fied 50 diameters by Beck’s two-thirds-inch objective; mounted in 
glycerine; no heliostat. 
Fig. 2. — Rounp-cELLED SARcoMA, San Francisco, 1882; magni- 
fied 100 diameters by Tolles’s four-tenths-inch objective; mounted 
in balsam; carmine-stained; no heliostat. 
