APPEARANCES OF THE RED BLOOD-CORPUSCLES, 16] 
instances filamentous, or nodular processes, long pseudopodia, 
rosaries, or detached particles, were formed as in the case of the 
red blood-corpuscles; these appearances occurred during 
vitality, and on treatment with plain water the organisms regained 
their normal appearance and movement. 
Thus it will be seen that these appearances have been observed 
and described by many during the last twenty years; that they 
are one and all of essentially the same character, there can be no 
doubt ; it appears to me—that is, that they are essentially pro- 
cesses of the constituent protoplasm of the red corpuscles, a 
phenomenon of its contractility. Many who have observed and 
described the appearances seem to have been unaware that they 
had previously been described by others, as I was myself when first 
I noticed them; for this reason I have thought it would be useful 
to collate and record the observations already made upon this 
subject. The appearances are remarkable and highly interesting, 
as affording evidence of the constitution of the red corpuscles ; 
no one, | think, after watching their evolution as above described, 
more especially under the action of ammonium chromate, can 
hava any doubt as to their true nature. 
VOL. XXI,—NEW SER, L 
