PROGRESS OF MICROSCOPICAL SCIENCE. 47 
MicroscopicaL Contents oF FoREIGN JOURNALS. 
Archives de Physiologie, No. 1, 1876.—Histological Researches on 
the Trachee of Hydrophilus piceus, by M. C. 8. Minot, with two plates. 
In this paper the author goes into the whole subject of the trachez 
and their relations to adjoining tissues. The author, by adopting the 
picro-carminate mode of staining, has been able to make out the 
distinction between the small cells and large ones of the external 
epithelium. THe describes the structure of the traches minutely.— 
Note on the Structure of certain Tubercular Granulations of the 
Testicle, by M. L. Malassez. This has two good plates.—Note on a 
case of Myelitis, by M. Pierret. A plate. 
Archiv fiir die gesammte Physiologie, &c., Band 14, Heft 4 and 5.— 
The only paper of microscopical interest, and that is only half so, 
is one on the Histological Structure of the Small Intestines, by A. 
Fortunatow, of the Physiological Institute of the University of St. 
Petersburg. 
Journal de T Anatomie, par Chas. Robin. No. 1, 1876.—On the 
Changes of Colour caused by the Influence of the Nerves, by G. Pouchet. 
This paper is said to be illustrated by four plates, but unfortunately 
they have not been placed in the present number. This is a most 
important memoir, being the one selected by the Academy of Sciences 
of Paris for the prize in experimental physiology. It relates many 
experiments conducted over the whole range of vertebrated animals, 
which prove that the changes of colour are produced by the influence 
of the nerves on the so-called chromoblasts. This paper extends 
to 90 pages.—The second paper is a short one, but it is of especial 
interest to the microscopist. It is by M. M. Duval, and is upon 
the mode of colouring sections of the nervous system. The chief 
value of the method is that it gives a distinct sort of coloration to 
the nerve-cells and axis-cylinders on the one hand, to the vessels on 
the other, and, lastly, a distinct tint to the envelopes (the pia-mater) 
of the chord. The mode consists in adding to the red colour ob- 
tained from carmine the blue colour due to one of the aniline dyes. 
From this there results a violet tint which differs in accordance with 
the structure of the particular parts, 
Zeitschrift fiir Anatomie und Entwickelungsgeschichte. Heraus- 
gegeben von W. His and W. Braune. 2nd Band, Ist and 2nd Heft. 
Leipsic, 1876.—The more important microscopical papers are :—On 
the Lymphaties of Bone, by Professor G. Schwalbe. This paper has 
not any illustrations, and we do not see that it adds much to what has 
been done already by Langer and Budge.—A more valuable com- 
munication is that of one of the editors, Professor W. His. It is on 
the Structure of the Embryo of the Dog-fish. The author follows the 
development of this creature from the time when the ovum has 
begun to undergo its first changes after impregnation, until its develop- 
ment is completed. The important point in the paper is its bearing 
on the researches of Mr. Balfour on the development of the dogfish. 
VOL. XVII. E 
