April 10, 1873] 
The work is in two volumes, the first, much the larger, 
‘being devoted to the text, while the second contains the 
drawings of the microscopical preparations described, as 
-well as the instruments, diagrams, and dissections re- | 
of the space, which is not coloured by silver, but 
ferred to. F 
_ The histological section, written by Dr. Klein, is, as a 
whole, far superior to any existing work on the subject, | 
which is saying a great deal, considering the large 
number of treatises on the use of the microscope, in the 
study of the tissues of the animal body, which have already | 
appeared, The careful way in which all the many details | 
NATURE 
receive their due consideration, is an example to authors | 
of text-books, and it is rendered evident on every page 
that the author is himself thoroughly familiar personally | 
with the points 
he records. 
Many methods 
till now com- 
paratively little 
known and em- 
ployed in this 
country are 
fully discussed, - 
amongthemost 
important of 
which is that of 
injecting or- 
gans by the 
“method of 
puncture,” in- 
troduced by 
Ludwig, which 
though it in 
many cases 
gives very de- 
cided results, 
has to be used 
with caution, 
as their inter- 
pretation is of- 
ten far from 
easy and some- 
439 
strongly with silver, slightly with solution of chloride of 
gold, and swells out in the fresh state on the addition 
of water; and secondly, of a less refractive trans- 
parent interstitial substance occupying the remainder 
is intensely stained by chloride of gold, and dis- 
appears in dilute acetic acid.” The illustrations 
accompanying the descriptions are new, and on a 
sufficiently large scale to render quite apparent the 
minutest structural points; much may be learnt from a 
simple inspection of them. We do not quite like the 
introduction of so many German synonyms for many of 
the terms employed, they convey but little meaning to 
most English students, and though otherwise harmless, 
they might be 
taken to indi- 
cate that our 
language is 
poor in me- 
chanism, or 
that we are 
overpoweringly 
indebted to our 
worthy _ rela- 
tions, neither 
of which views 
is strictly cor- 
rect. A little 
consideration 
might have 
been shown to 
our microscope 
makers by the 
employment of 
the well-known 
English no- 
menclature of 
objectives (for 
a man may be 
a first-class his- 
tologist and yet 
not know the 
times mislead- meaning of 
ing. The minu- Hartnack’s No. 
test. details, the Fic. 1.—Centrum tendineum of rabbit, seen from the abdominal side. Berlin blue had been introduced 10), and the 
Omission of into the peritoneum by “natural injection.” 4, Straight interfascicular lymphatics between the systematic ig- 
“ye fi bundles of tendon of the abdominal side ; «, lymph vessels of the pleural side, showing the valves, z . 
which so oiten with corresponding dilatations. The last lymph vessels are as completely injected as the first. noring of their 
marsthe results (Oc., 3: Obj., 4. Tube not drawn out.) excellent work- 
are given in manship can- 
many cases as well as if the teacher himself were by the 
side of his pupil. The means to be employed for ob- 
taining a view of the stomata of thie lymphatic system, as 
they are seen on the centrum tendineum of the diaphragm, 
is a case in point to which several pages are devoted, 
in which also the structure of these little understood 
organs is excellently entered into. The chapter on em- 
* bryology is also very complete ; the paragraphs on striated 
muscular fibre are as logical as they are clear, the follow- 
ing being the summary :—“ From all these (the previous) 
facts we learn that the substance of a muscular fibre 
consists, in the first place, of oblong prisms, ¢.¢., sarcous 
elements, with their axes parallel to its axes, and formed 
of a material which refracts light strongly, is stained 
not but produce ill-fecling ; for though they may be ex- 
pensive, they have undoubtedly been the originators of 
most of the greatest improvements in their branch. 
Dr. Sanderson has undertaken the physiology of the 
blood, together with that of the circulation, respiration, 
and animal heat. The chapter on the first of these sub- 
jects is excellent and thorough, nothing better could be 
wanted, the author being able to keep within the region 
of fact. The German elaborate verifications of the sup- 
posed functions of many of the most important nerves, 
are given in a very lucid and concise manner, and several 
of the excellent instruments introduced by them are clearly 
described, together with the principles of their action, and 
the methods of employing them. But in the other more 
