442 



ELIOT R. CLARK AND ELEANOR LINTON CLARK 



M^atched closely and records kept, they were seen to approach 

 the globule and sometimes to flatten out on its surface and 

 then to move away again. 



In the present study, we confined our attention to the study 

 of the living. It would be of interest to study the leucocytes, 



May 19 



^ 



o 



lym. 



May 20 



.y.^ .'-••>. 



o 'y"^ 



Of;"- g^ 



C.I. 



May 21 



P.l. 



Fig. 9 Drawings of the same specimen and injection mass as in figure 8, 

 showing the rate of absorption of an injected mass of small globules (yolk of 

 egg). May 19, sketch made immediately after the injections. May 20, all of the 

 small globules have either disappeared or are found inside of leucocytes. May 

 21, only a few pigmented leucocytes, containing a few granules of yolk, remained 

 at the injection site, lym., lymphatic; p.l., pigmented leucocyte; c.L, clear 

 leucocyte. Enlargement = 187x. Drawn with camera lucida. 



containing fat, in fixed specimens and with special stains in order 

 to discover if this reaction is confined to any one type of leuco- 

 cyte. That such might be the case was suggested in several 

 of our series of observations, owing to the fact that certain clear 

 leucocytes, favorably located with respect to the injected fat, 

 often remained in the same position, occupied at the time of 



