1909. ] ON THE TUBERCULIN TEST IN MONKEYS, 81 
Pilema octopus, Pelagia phosphora, and three specimens of 
‘Cassiopea were also carefully examined, but no trace of gonadial 
grooves could be found in any of them. 
In conclusion I desire to tender my warmest thanks to Lord 
Avebury for his kindness in nominating me to the use of a. table 
-at the Plymouth laboratory during the month of August, and also 
to the laboratory officials for the excellent facilities which were 
-afforded me for the collection and examination of specimens during 
my stay there. 
EXPLANATION OF PLATE XXIV. 
Gonadial grooves of Aurelia aurita. 
All the figures are camera lucida drawings. Fig. 2 is with Leitz —, oil-immersion 
; 2 5 te) 5 2 
“objective and No. 4 eyepiece. 
‘Fig. 1 (X40). Section passing through groove, at a point just within the gastric 
pouch. Thick buttressing mesogloea on either side of the groove. Mass 
of male cells lying within the groove. 
| Fig. 2 (1050). Portion of section in fig. 1 showing spermatozoa and nutrient 
cells in the groove. 
Fig. 3 (X46). Section passing through main passage to a gastric pouch, showing 
gonadial groove in the floor in an almost median position bounded on either 
side by endodermal epithelial folds. Between the latter is a mass of eggs. 
REFERENCE LETTERS. 
b.w, body-wall or mesoglea; d.n.c, disintegrating nutrient cells; e, epithelium 
lining gonadial groove and main passage; g.g, gonadial groove; g.p, gastric pouch; 
n.c, nutrient cells; 0, eggs; s.p, spermatozoa. 
4, The Tuberculin Test in Monkeys: with Notes on the 
Temperature of Mammals. By Arraur Erwin Brown, 
D.Sc., C.M.Z.S., Secretary of the Zoological Society of 
Philadelphia. 
[Received November 25, 1908. | 
(Text-figures 1—4.) 
For many years previous to the introduction of a rigorous 
‘quarantine system for incoming monkeys, and of exact measures 
for the detection of tuberculosis in the Zoological Gardens at 
Philadelphia, it is believed that at any given time from one-fifth 
to one-fourth of the monkeys in the collection were tuberculous. 
Indeed, there have been at least two periods when, under what 
appeared to be an infection of especial virulence, the death-rate 
-exceeded this average. 
A more or less similar experience has been that of the older 
Zoological Gardeus in Europe and America, 
In March 1905, upon the opening of the Laboratory of Patho- 
logy in the Gardens at Philadelphia, a Series of observatious was 
-begun by Dr C. Y. White, at that time the Society’s pathologist, 
Proc. Zoou. Soc.—1909, No. VI. 6 
