556 
J. O. WAKELIN HARI^ATT. 
granule or rod throughout life, not undergoing any meta- 
morphosis. 
In the cells of the lobules of the liver of the adult rabbit fixed 
ill Benda’s orFlemming’s solution, and stained by Heidenhain’s 
iron-alum haematoxyliu method (figs. 1 and 3), only mito- 
chondria are normally met with. These are spherical or oval 
in shape, and are usually 0’6 to TO /x in their greatest length, 
but the latter measurement may be exceeded, and, on the 
other hand, granules 0*2 g or less in diameter may be met with 
(fig. 3). The mitochondria are sharply outlined, and are 
Fig. 2. 
Section of liver of raliliit, exliibiting pigmentary degeneration. 
The liver-cells, which exhibit the normal arrangement in branch- 
ing columns, contain dark pigment-graindes, similar in size and 
arrangement to the chondriosomes shown in fig. 1, but less 
numerous. Fixed in Zenker’s solution. Stained by Heidenhain's 
ii-on-alum Inematoxylin method, x 200. 
scattered irregularly throughout the cytoplasm of the liver- 
cells, not being definitely arranged iu chains or groups. They 
appear to vary in number. It is not, however, possible to deter- 
mine accurately the number of chondriosomes present in a 
single cell owing to the difficulty of defining the exact limits of 
the hepatic cells. Nevertheless, seventy may be regarded as 
an appi’oximate estimate of the number present in a single 
hepatic cell. The varieties observed in the chondriosomal 
content of healthy liver-cells in different rabbits (illustrated 
