36 Professor Halford. 



DESCRIPTION OF THE PLATES. 

 PLATE I. 



Magnified 440 diameters, making them from ^ to -^ 

 of an inch. 



The large cells, as they are seen in the blood before 

 the addition of magenta solution. It will be observed-, 

 that the whole cell consists of granular matter, with a 

 large granular nucleus. 



It is, to me, evident that these cells are the same as 

 those alluded to by Brainard, thus : " Abondance de 

 corpuscles blancs se groupant en masses mamelonneV' 



PLATE II. 



The same cells after the addition of the following 

 solution : 



Magenta (or fuchsin) O'l gramme. 

 Absolute alcohol 2 c.c. 



Distilled water - 98 c.c. 



This is mixed on the slide with a drop of the blood, 

 and, after a few minutes, a thin cover-glass gently put 

 on. 



The cells have lost all their granular contents, except 

 the granular nucleus and a small portion of proteid 

 matter adhering to the inner side of the cell-wall. 

 Both are deeply stained by the magenta, and the 

 latter is what I have called " the macula," for it is 

 not a " pullulation." 



