304 



The Structure of Colored Blood- Corpuscles. 



corpuscles, the remaining portion into nucleus and body. 1 Of 

 the three views thus presented, Lankester gives, after Strieker, 

 the following tabular statement : 2 



' Stroma. 

 Coloring; 'matter, 



Red blood-corpus- 

 cles of ovipara, 

 divisible into 



According 



to Rollett, 



<Ecoid=outer part of stroma. ) Accordi 

 Zooicl=rest of stroma plus V t B ^ 

 haemoglobin. ) 



Membrane=oecoid. 

 Body=zooid minus nucleus. 

 [ Nucleus=zooid minus body. 



According 



to 

 Strieker. 



If it had not been for the deserved eminence in other respects 

 of the three investigators,. Rollett, Briicke and Strieker, these 

 notions of the structure of colored blood-corpuscles would 

 probably never have attracted any attention. 



Laptschinshif considered colored corpuscles to consist of two 

 kinds of substance, viz., one which appears smooth, soft, ex- 

 tensible, assumes mostly a roundish form, and, altogether, pos- 

 sesses some if not all of the properties of the so-called stroma ; 

 the second, visible under the microscope only, when through 

 the action of different re-agents it is precipitated, or swelled, or 

 both. It is this second substance which, on staining, takes up 

 the coloring matters, and, by separating in the interior of the 

 corpuscle from the first substance, or protruding from it, gives 

 rise to the various shapes observed. At present it cannot be 

 determined in what relation these two substances stand to each 

 other previous to the precipitation of the stainable portion. 

 The separating the blood-corpuscles into the two substances 

 mentioned, is brought about by various external influences. 



In amphibian, i. e., frog's and salamander's, red blood-corpus- 

 cles, Hensen, B ditcher, Kollmann and Fuchs have seen a net- 

 work ; and although they have failed to interpret it correctly — 



(1) Mikrochemische Untersuchungen der rothen Blutkorperchen ;" Archiv fttr die ges- 

 ammte Physiologie des Menschen und der Thiere (Pfliiger's), vol. I (1868), p. 592. 



(2) Op. cit. in a foot-note to p. 374. 



(3) " Ueber das Verhalten der rothen Blutkorperchen ;" loc. cit.. pp. 173, 174. 



