396 DR. E. KLEIN. 
G. and F. Hoggan. Neumann’s assertions as to the exist- 
ence of lymphatics of these organs are of the same value as 
those referring to his lymphatics of the fat tissue and the 
hair-follicles, viz. they belong merely to the surrounding 
connective tissue. 
In preparations of the human scalp, the lymphatics of 
which had been successfully injected with asphalt-ben- 
zole, the alveoli of the sebaceous glands are seen surrounded 
for a larger or smaller part of their circumference by dym- 
phatic spaces and sinuses, which are connected both with 
lymphatic vessels and with the interfascicular lymph-spaces 
of the connective tissue. 
Elongated lymphatic clefts are also seen between the 
bundles of the arrector muscle, similar to those to be observed 
in the unstriped muscle-tissue generally. 
Il.—Tuer LYMPHATICS OF THE SKIN OF THE FROG. 
29. Owing to the great abundance of glands in the skin 
of the frog, aud owing also to the importance in the process 
of absorption of this organ, I have investigated also its 
lymphatics. But there were very great difficulties to over- 
come. What I intended was to demonstrate by a good 
injection the arrangement and distribution of the lymphatics. 
The method of puncture was here out of question, for it was 
impossible for me to obtain a canula of the necessary fine- 
ness. It occurred to me that Budge’s method of forcing by. 
pressure (of air, water, or mercury) the injection material 
into the lymphatics as practised by him in the case of the 
lymphatics of the cartilage and bone (l.c¢.) might be pro- 
ductive of good results. My expectations were soon realised. 
The method I followed was this: in a decapitated frog I cut off 
the anterior extremities,and enucleate the trunk from its skin, 
after severing the septa between the cutaneous lymph-sacs 
of the chest, abdomen, and dorsum ; I then place a ligature 
round the root of the trunk, and cut this latter off close to 
the ligature. J have now a preparation that consists of the 
entire lower extremities and the empty skin of the abdomen, 
chest, and dorsum. This quasi-bag is tied round the mouth 
of a small funnel, specially provided there with a groove, 
and the tube of the funnel is fixed in a retort holder, so that » 
the preparation is hanging downwards. The tube is a long 
glass tube, and is connected with the injection bottle con- 
taining the injection fluid. This is pressed into the funnel 
by a mercury pump, 
A pressure of two to two and a half inches being applied, 
