TKANS. MICH. SOC, Vol. XII., N.S., PL. VI. 
Fig. 1. Fig 3. 
Carious spontaneous changes in form of Eed 
Corpuscles of the Frog. X 700. 
Fig. 2. 
Vibratile Filaments and minute particles con- 
sisting of Viscid Coloured Matter. Blood 
Corpuscles of Human Subject, x 1800. 
Fig. 4. 
Changes in form of Eed Rlood Corpuscles of 
Guinea Pig after removal from the body. 
X 1800. 
Fig. 7. 
Perfect Tetrahedral Crystals formed from Guinea 
Pig's Blood. In many cases one Corpuscle became 
one Crystal. 
Curious changes in form of Eed Blood Corpuscles 
of the Prog, resulting from exposure to heat. 
The thin filaments of the red viscid matter were 
in constant and very active vibration, x 700. 
Fig. 5. Fig. 6. 
Disintegration of the Eed Blood Corpuscles of the 
Guinea Pig, resulting from heat. Some have sepa- 
rated into several small particles, each of w hich has 
assumed the crystalline form, x 700. 
Fig. 8. 
Colourless and scarcely visible Corpuscles in Guinea 
tig's Blood (probably very young Red Corpuscles), 
surrounded by ordinary Eed Blood Corpuscles. 
1000th of an inch '''''' x 700 linear. 
1000th of an inch L ! ! > i j \ i I x 1800 linear. 
L. S. B., ad -nat. .T'lnr.. ISaS. 
