ABDOMINAL VISCERA. 17 
2. The liver: a large reddish-brown bilobed organ just behind 
the heart. 
3. The lung's: two thin-walled elastic sacs at the sides of the 
heart : they lie dorsal to the liver, and are often hidden by it. 
Note the bristles already passed into the lungs through the glottis. 
4, The corpora adiposa, or fat bodies: two bright yellow 
tufts of flattened processes attached to the dorsal wall of the 
body cavity: they vary much in size, and usually come to the 
surface just behind the liver. 
5. The small intestine: a light coloured convoluted tube: 
in the middle line behind is the much wider large intestine. 
6. The bladder: a thin-walled bilobed sac at the posterior 
end of the body cavity. 
7. In the female frog note, in addition to the above parts, 
a. The ovaries: two large bodies of irregular shape, each 
consisting of a mass of spherical black and white 
eggs, like small shot. 
b. The oviducts: two long very much convoluted tubes with 
thick white walls, lying at the sides of the body cavity. 
8, In the male frog note, 
a, The testes: a pair of ovoid bodies of a pale yellow 
colour, attached to the dorsal wall of the body 
cavity. 
D. The Peritoneum. 
Fig. 2. A diagrammatic transverse section across the posterior part of the 
body of the female frog. 
B 
