EFFECT OF SACCULINA UPON FAT METABOLISM OF HOST. 273 
a considerable variety in the quantity is noticed — at one 
time it is great (vide Text-fig. 2a), at another, small (2b), 
in one and the same type. This is indeed what one would 
expect, if one regards the fat supply as dependent upon the 
animals’ casual opportunities for obtaining food. 
These observations upon the liver of infected crabs are 
based upon a considerable number of individuals. Unfor- 
tunately, I did not take a sufficient number of animals among 
the sexually mature females to enable nie to state readily 
Text-fig. 2. 
a b 
a. Transverse section through liver-lobe of Inaclius mauri- 
tanicus (normal), showing large quantity of fat in the liver- 
cells. b. Another lobe, showing loss of fat from the liver-cells. 
( Semi- diagrammatic.) 
that the phenomenon of increased fat in the “ liver-cells” is, 
or is not to be seen in their case. But the following observa- 
tions may be adduced as bearing upon the point. 
The liver of Inachus exhibits a considerable amount of 
variety in its superficial coloration, due, as several authors 
have observed, to the presence or absence of colouring 
matter in the “ ferment cells ,n of the lining epithelium. At 
1 It is open to doubt whether the term “ ferment cells ” expresses the 
function of these correctly: I merely adopt the name faute de mieux. 
