560 
J. 0. WAKELTN BARRATT. 
fine, sometimes coarse, occasionally thicker at the end, and 
not nnfreqnently presenting a fl.ittened-ont appearance. 
They measure 0'5 g to 0’8 /x in thickness, and reach about 
4’5 ju in lengtli. The number ot clioudriosomes in individual 
convoluted tubule cells could not be accurately determined, 
but appeared to be approximately about fifty. 
In sections of the kidney of a rabbit suffering from severe 
hmmoglobinuria following injection of a large amount of 
haemoglobin (obtained from rabbit’s red blood-cells) (fig. 6), 
or of a dog suffering from haematuria due to piroplasmosis, 
the renal cells exhibited clioudriosomes, readily stained by 
Heidenhain’s iron-alum haematoxylin method, after the 
Figs. 7 (to left) and 8 (to right). 
Fig. 7. — Renal cell taken from fig. 5, more highly magnified. The 
cytoplasm contains deeply stained chondriosomes, assuming the 
form of more or less oval granules 0'5 fi to 2’0 p in diameter. 
Neai‘ the basement membrane these granules are small ; towards 
the free surface large granules are seen. Fixed in Flemming’s 
solution. Stained Ijy Heidenbain's iron-alum hsematoxylin 
method. X 1000. 
Fig. 8. — Renal cell, taken from fig. 6, more highly magnified. Near 
the basement membrane, chondriosomes, deeply stained, of 
small size and more or less elongated, ai’e seen in the cytop>lasm ; 
towards the free surface of the cell large chondriosomes, 
reaching as much as 4 ju in length, are observed. (The large, 
darkly stained mass lying wholly within the nucleus is a 
nucleo’us ; below and to the right of this is alarge chondriosome 
lying upon the edge of the nucleus.) Fixed in Zenker's solution. 
Stained by Heidenbain’s iron-alum haematoxylin method. 
X 1000. 
use of fixatives such as Zenker’s solufciou and formaline 
wbicli do not permit of the staining of chondriosomes in 
the normal kidney of the rabbit. As was first described and 
