1898-99.] Prof. Carlier on Changes in Newt's Stomach. 
673 
Changes that occur in some Cells of the Newt’s Stomach 
during Digestion. By E. Wace Carlier, M.D., B.Sc., 
etc., Professor of Physiology, Mason University College, Bir- 
mingham. (With Five Plates.) 
(Read 1st May 1899.) 
. With a view to ascertain as far as possible the minute changes 
that occur in the cells of the mucous membrane of the stomach 
during, and after, activity, I procured from England towards the 
end of winter a number of newts ( Triton cristatus). 
When they arrived they were very emaciated, and, indeed, in 
a starved condition, having no doubt but recently awakened from 
their winter sleep ; they appeared, however, quite healthy, and 
swam well when placed in water, and took and retained food 
when given to them in the form of lively worms. 
These English newts were fed at the same time with the same 
weight of worm, and killed at intervals after the meal, one being 
sacrificed every twenty-four hours, to the end of the tenth day. 
Such long intervals were allowed to elapse between each sample 
taken, because Langley (13) states that during winter in thin and 
emaciated animals that have been fasting for a considerable time 
the changes take place very slowly. 
These constituted the first set of experiments. 
In June of the same year I procured a large number of fine 
Triton cristatus from the Eft Pond in the Braid Hills near 
Edinburgh. They were in good condition and very lively. 
When worms were given them, they ate them readily, and were 
hungry again in less than twenty hours. However, to make sure that 
the stomach was quite empty and in a resting condition, I allowed 
an interval of one hundred and fourteen hours to elapse after the 
first feeding, and then, selecting newts of about the same size and 
weight, fed them a second time, each receiving the same amount 
of healthy worm. From the first snap to the disappearance of the 
worm finally within the mouth a period varying from five to ten 
minutes elapsed and was carefully noted in each case, time being 
