QUARTERLY CHRONICLE. 39 
question differ in the capacity they possess of being black- 
ened by the argentine solution. In speculating upon the 
nature of these peculiar bodies, which are of a cellular nature, 
the author suggests that they may bear some analogy with 
the peculiar bodies described by M. Schultze in the nasal 
mucous membrane, or those noticed by Hensen, also in the 
frog’s epidermis, as being connected with nerve-fibres; he 
also adduces the bodies described by Schultze, Kolliker, and 
HH. Miiller, in the epidermis of Petromyzon. And it appears 
not improbable that they may, in fact, represent a sort of 
corpuscula tactis. 
6. ‘Further Remarks on the Action of Hyperosmic Acid 
on Animal Tissues,” by M. Schultze and Dr. M. Rudneft.— 
These observations are in continuation of those given in the 
former part of the ‘ Archiv’ on the same subject. The prin- 
cipal subject in which the acid was employed seems to have 
been in the investigation of the luciferous organ of Lampyris, 
and the chief property of the reagent is that of rendering 
the nerve-fibres distinct, in consequence of the readiness with 
which the nervous tissue is coloured by it. It would seem to 
possess properties well worthy the attention of histologists. 
7. “On Nobert’s Test-plates,” by M.Schultze.—M. Nobert, 
it seems, now prepares his celebrated “ tests” in a new form. 
The specimens described by Schultze contain nineteen groups 
1 ut 
of lines, from =,” to +4,” apart, and thus arranged : 
Ist set, +50: Ath set, s55, &c. 
4 es eee 18th ,,- osc: 
3rd +P) ZV o° 19th ” 70000" 
The highest set M. Schultze has been able to define with 
central illumination is the 9th, which is resolved by Hart- 
nack’s immersion system No. 10, and by Merz’s immersion 
system ;. With oblique illumination he has not been able 
with any combination to get beyond the 15th. He considers 
the most difficult specimens of Pleurosigma angulatum to be 
about equal to the 8th or 9th set of Nobert’s lines, and the 
larger instances to correspond with the 7th. 
Reichert’s und Du Bois-Reymond’s Archiv (Muller’s).— In an- 
other part of our pages we publish a translation of a paper 
which appears in the ‘ Archiv,’ by Herr Elias Meczniknow, 
“ On the Development of Ascaris nigrovenosa.” 
Dr. Albert Eulenburg, of Greifswald, publishes a long 
essay in the same journal on the “ Action of Sulphate of Qui- 
nine on the Nervous System,” in which the physiological part 
of the question more particularly is dealt with. 
“ On the Nervous Plexus in the Intestine of the Child” is 
