THE DISSOCIATION OF OXY-HHMOGLOBIN AT HIGH ALTITUDES, 291 
is very similar to that overlooked by Col d’Olen. A grant of 151. is 
asked for for the purpose of carrying out experiments at Carlingford 
similar to those at Col d’Olen, on the same persons as far as possible. 
The Ductless Glands.—Report of the Committee, consisting, of 
Professor ScHAPER (Chairman), Professor SWALE VINCENT 
(Secretary), Professor A. B. Macattum, Dr. L. BE. SHoRE, 
and Mrs. W.H.THompson. (Drawn up by the Secretary.) 
Mrs. Tompson has been continuing her investigations into the neck 
organs (thyroid, parathyroid, post-branchial body, carotid body, ventral 
branchial body, thymus, procoracoid, and pro-pericardial bodies). Her 
attention has been chiefly directed to these various structures in the 
frog. It seems to be fully established that in the case of the American 
frogs which came into our hands at Winnipeg the thymus disappears 
or becomes ifvisible during the winter months. The Secretary can 
state definitely that the same is not true of winter frogs in Edinburgh. 
The ventral branchial body of the frog is a large and striking organ 
which must possess important functions. Attempts have been made 
to extirpate the body, but these have been without suecess up to the 
present time. Professor Vincent has also tried to remove the para- 
thyroids from the frog (since these are quite separate from the thyroid), 
but the small size of the bodies has so far rendered the operation 
impossible. 
Mrs. Thompson’s results have been submitted to the Royal Society 
of Canada, and will probably be published in the Transactions. 
Drs. Gardner and Mothersill have continued their experiments upon 
the adrenals of the dog. They find, as others have done, that extirpa- 
tion of one gland causes marked wasting of the animal, though this is 
of a temporary character. They are also able to confirm the statement 
of some writers that after removal of one gland there is a marked com- 
pensatory hypertrophy of the other. But the chief object of their 
experiments was to discover whether, when the animal survives for 
some time with a minimum of adrenal substance, there is a notable 
hypertrophy of the chromaphil tissues which are left behind, and in 
particular the abdominal chromaphil body.t| The experiments show 
that such hypertrophy actually occurs. 
Professor Vincent has found that the abdominal chromaphil body 
of the dog can be stained deep brown by means of bichromate of 
potassium even while the animal is alive. This is a convenient way 
of extirpation of the body without surgical proceedings. But in some 
eases the brown colour has disappeared when the animal has been 
allowed to survive. The nature of the absorbable or soluble compound 
formed with the bichromate is being investigated. A preliminary 
account of this work has been sent in to the Royal Society of Canada. 
1 See Vincent, Proc. Roy. Soc., 1910. 
uv 2 
