Cuap. XVIL ABSORPTION BY THE GLANDS. . 419 
brown tint. When looked at again after 1 hr. 30 m., most of 
them presented a somewhat different appearance. A third 
specimen was treated with a weaker solution of one part of the 
carbonate to 437 of water, and after 1 hr. the glands were pale 
brown and contained numerous granules. 
Four summits were irrigated with a solution of one part of 
nitrate of ammonia to 4387 of water. One was examined after 
15 m., and the glands seemed affected; after 1 hr. 10 m. there 
was a greater change, and the primordial utricles in most of 
them were somewhat shrunk, and included many granules. 
In the second specimen, the primordial utricles were consider- 
ably shrunk and brownish after 2 hrs. Similar effects were 
observed in the two other specimens, but these were not ex- 
amined until 21 hrs. had elapsed. The nuclei of many of 
the glands apparently -had increased in size. Five bladders 
on a branch, which had been kept for a long time in mode- 
rately pure water, were cut off and examined, and their glands 
found very little modified. The remainder of this branch was 
placed in the solution of the nitrate, and after 21 hrs. two blad- 
ders were examined, and all their glands were brownish, with 
their primordial utricles somewhat shrunk and finely granular. 
The summit of another bladder, the glands of which were in a 
beautifully clear condition, was irrigated with a few drops of 
a mixed solution of nitrate and phosphate of ammonia, each 
of one part to 487 of water. After 2 hrs. some few of the 
glands were brownish. After 8 hrs. almost all the oblong glands 
were brown and much more opaque than they were before; 
their primordial utricles were somewhat shrunk and contained a 
little aggregated granular matter. The spherical glands were 
still white, but their utricles were broken up into three or 
four small hyaline spheres, with an irregularly contracted mass 
in the middle of the basal part. These smaller spheres changed 
their forms in the course. of a few hours, and some of them 
disappeared. By the next morning, after 23 hrs. 80 m., they 
had all disappeared, and the glands were brown; their utricles 
now formed a globular shrunken mass in the middle. The 
utricles of the oblong glands had shrunk very little, but 
their contents were somewhat aggregated. Lastly, the summit 
of a bladder which had been previously irrigated for 21 hrs. 
with a solution of one part of sugar to 218 of water without 
being affected, was treated with the above mixed solution; and 
after 8 hrs. 30 m. all the glands became brown, with their 
primordial utricles slightly shrunk. 
Four summits were irrigated with a putrid infusion of raw 
