Monthly Microscopical 
( 286 ) [ Jou, N on 1, 1870. 
NEW BOOKS, WITH SHORT NOTICES. 
A Manual of Human and Comparative Histology. Edited by 8. Stricker, 
Vol. I., translated by Henry Power, M.B.Lond., F.R.C.S., Ex- 
aminer in Physiology in the University of London. The New 
Sydenham Society, 1870.—Mr. Henry Power, the accomplished 
translator of this the first volume of Herr Stricker’s work, has 
done excellent service to English Histology by rendering the 
present work into English. It is quite true, as he says, that we 
have such excellent works as Kélliker, translated by Messrs. Busk 
and Huxley, in our language. But the translation of this, though 
excellent so far as Messrs. Busk and Huxley’s labours are con- 
cerned, is certainly a little behind the time in some respects. It 
was quite right that the excellent volume of Stricker’s within a 
year of its completion in Germany should appear, and it is 
so very perfect a work of its kind, and will we doubt not, when 
completed, be so admirable a treatise on Human Histology of 
the most advanced schools, that it merits the attention of all 
who have even the smallest interest in microscopic anatomy. 
It would be impossible for us to attempt a review of the whole 
treatise. Indeed, so far as we can see, there is not very much 
novelty in many of the chapters. But in some it is unquestionable; 
for indeed, so far as our text-books are concerned, there is none 
which at all completely contains the facts put forward in this 
volume. Foremost among the chapters which strike us as par- 
ticularly novel, comes the communication of Max Schultze on 
the general characters of the structures comprising the nervous 
system. This is particularly interesting, if only from the fact 
that in most of our treatises it is dealt with in so particularly 
ancient a fashion, and Herr Schultze has so much that is new to 
most English readers to say about it. In regard to Pfliiger’s 
views, first published in 1866, Max Schultze makes the following 
remarks :—“It is this kind of nerve-fibre which with few excep- 
tions is present amongst the Invertebrata. Nerve-cords which 
consist of such fibres do not possess the bright glaring appearance 
of ordinary nerves, but are semitransparent, grey, gelatinous, and 
resemble embryonic tendinous tissue. If they are freed from the 
denser connective tissue which invests them, they can be broken 
up into their constituent fibres as easily as other nerves, which is 
a consequence of the firm consistence of the sheath of Schwann 
surrounding each fibre. The diameter of these non-medullated 
nerye-fibres, varies very considerably. In the Sympathetic they 
scarcely exceed that of the medium-sized medullated fibres, but in 
the olfactory nerves of many animals fibres may be found at least 
three or four times thicker than the largest medullated fibres.” 
The author then points out where these are best found, and figures 
them, and he concludes this portion of his essay by a classification 
of the several fibres, which he arranges under six different classes. 
In regard to the minute structure of the ultimate nerve, it is 
