* 
366 
of the ‘Sitzungsb. der Wiener Akad.,’ 11 Abthl., 1867. (De- 
scribes the action of boracic acid, distinguishes the “ cecoid ”’ 
or sac of the corpuscle and the “‘ zooid ”’ or coloured contents. ) 
Hensen, “ Untersuchungen zur Physiologie der Blut-kor- 
perchen sowie tiber die Zellennatur derselben,” ‘ Zeitschrift 
fiir wissensch. Zoologie,’ vol. xi, 1862, p. 253. (Describes 
peculiar appearances in corpuscles of a frog in which the 
blood was nearly devoid of these bodies, also a method of 
producing this condition of Acythemia. Distinguishes a 
layer of fluid protoplasm surrounding the colouring matter 
by cadaveric alteration of which he believes the supposed 
membrane of the corpuscle to be formed. 
Boettscher, ““ Untersuchungen iiber die rothen Blut-kor- 
perchen der Wirbelthiere,” ‘ Virchow’s Archiv,’ vol. 36, 
p- 342, 1866. (Discusses at great length the various views 
and observations on the red blocd-corpuscle, gives some 
account of the effect of chloroform vapour and oxygen, 
advances the opinion that the mammalian red corpuscle is 
nucleated, also replies to objections in a later volume, 
vol. 39, and describes decolouration and formation of a 
Robertsian pullulation by placing red corpuscles in humor 
aqueus or serum of another species of animal.) 
Schmidt and Schweigger-Seidel, ‘Ludwig’s Arbeiten,’ , 
1867. (Describe action of aqueous vapour Co, and Chloro- 
form, oppose Bottscher’s notion of a nucleus.) 
Klebs (‘ Virchow’s Archiv,’ Bd. 38) opposes Bottscher’s 
view as to a nucleus in normal mammalian blood, and de- 
scribes the nucleus present in the red corpuscles of leukeemic 
subjects. 
Busk (‘ Quarterly Journ. Micros. Science,’ 1852) describes 
the nucleation of the red corpuscle in pregnant women, first 
observed by Nasse (‘ Wagner’s Handworterbuch,’ i, 90). 
Rolleston (ibidem, 1867, p. 127) describes an appearance 
of nucleation in dried blood-corpuscles of the sloth, also in 
somewhat stale but liquid blood of the elephant, cites various 
authors. 
Beale (§ Quart. Journ. Micros. Science,’ 1864, two papers) 
describes effect of heat on red corpuscles, also spontaneous 
changes in frog’s red corpuscle, effects of pressure, &c., 
molecular matter of the blood, small red corpuscles, &c., 
opposes the notion of a wall to the corpuscles. 
Preyer (‘ Virchow’s Archiv,’ vol. 30, 1864) describes ame- 
boid movements and processes exhibited by red corpuscles of 
the frog extravasated into the lymph sacs, also spontaneous 
and regular fission of the same. 
Max Schultze (‘ Archiv f. Mikrosk. Anatomie,’ vol. 1) de- 
