F. H. Stewart 
223 
The gland is also clearly distinguishable in sections (PI. I, figs. 6-7, 9-12). It 
consists of a large elongated cell lying immediately dorsal to the ventral hue. 
At its anterior end it is in very close contact with the ventral line if not in direct 
protoplasmic continuity with it. (PI. I, fig. 9.) It possesses one large nucleus 
only and the protoplasm is eosinophilic. The anterior pole of the cell fits into a cap 
of cells of the ventral line. This gland is homologous with the ventral gland of 
Ascaris capsiilaria R. and the anterior cap of cells with the duct. (Stewart, 1906; 
Baylis, 1916.) 
(7) Larva from the lung of the rat ten days after the first infection 
and six days after the last. (PI. I, fig. 5.) 
Total length 0-661 mm., maximum breadth 0-029 mm., head to nerve ring 0-051, 
length of the oesophagus 0-13 mm., length of oesophagus/total length 1/5-08. 
The three lips are distinct but low, the nerve ring is difficult of recognition, the 
ventral gland is very distinct, the intestine is open throughout and the anus is 
patent. A group of cells in the ventral line at the commencement of the posterior 
third of the body probably represents the rudiment of the female gonads. 
(8) Larvae from the alimentary canal of the rat twelve days after 
the first infection and nine days after the last. 
(a) From the stomach (Text-fig. 6). (Mounted in Canada balsam.) 
Total length 1-3 mm., maximum breadth 0-037 mm., length of oesophagus 
0-2 mm., length of oesophagus/total length 1/6-5. 
