Rk. R. Bensley 
127 
transition may be observed between the cells of the various parts of the 
gland, but the cells of the gland have altered considerably in character. 
Fia. 8A and 8B. Transverse sections of 
deeper end of cardiac glands: A, from young 
pig; B, from adult pig. 1000. From prepa- 
rations stained in paracarmine and strong 
muchaematein. The deeply shaded portions 
of the cells next the lumen represent the ex- 
tent of the mucus stain. 
The mucus in these cells stains 
muchematein, if employed in the 
manner described for the human car- 
diac glands. 
The cells of the lower ends of the 
glands are much the same as in the 
young animal, but always show a 
considerable amount of mucin in 
their distal zone (Fig. 8B) which 
stains strongly in mucicarmine and 
muchematein, although less readily 
in the latter than the cells of the 
surface. 
Comparing these cells, now, with 
those of the pyloric glands, the differ- 
ence although still striking, is not so 
great as in the young animal, for 
while the pyloric gland cells are 
much larger than those of the car- 
In the upper portion of the gland 
where are found in the young ani- 
mal cells with a large distal zone 
filled with rubinophilous granules, 
the adult gland contains cells with 
a distinct mass of mucus. ‘This 
mass may be confined to the inter- 
ior of the cell.in which case, a pro- 
toplasmic portion filled with gran- 
ules intervenes between it and the 
free border of the cell, or it may 
reach the free border in which 
case the granules are clustered 
around the proximal end of the 
mass; or, finally, it may be partially 
or completely divided into two 
masses by a strand of granular pro- 
toplasm stretching across the cell. 
readily in both mucicarmine and 
Fig. 8B. Transverse section of deeper 
end of cardiac 
* 1000. 
gland from 
See Fig. 8A. 
adult pig. 
diac glands and are quite filled with mucin or its antecedent substances, 
they are nevertheless engaged in the same kind of activity as the cardiac 
