TRANSACTIONS OF MICROSCOPICAL SOCIETY. 
DESCRIPTION OF PLATE III, 
Illustrating Mr. Addison's paper on Changes of Form in the 
Red Corpuscles of Human Blood. 
Kg. 
1. — Natural forms of the red corpuscles of human blood. 
2. — Alkaline forms^ produced by saline and alkaline liquids. 
3. — Acid formsj produced by the action of weak acid liquids. 
4. — Tailed forms, produced by Sherry wine, &c. 
