604 
mens of the four anthrepoid apes and leading 
up to the detailed study of the human ce- 
cum and appendix, the nmerous varia- 
tions of which are all represented by one 
or more type specimens. In the same way 
the various forms of the stomach and the 
modifications of small and large intestine 
constitute a series of great morphological 
interest. 
Other series deal with the vertebrate 
respiratory apparatus, especial stress being 
laid on the clear demonstration of the 
development, evolution and structure of 
the mammalian lung. Closely connected 
with this group is the serial exhibit deal- 
ing with the heart and circulatory system. 
Other series include the nervous system, 
the genito-urinary tract, the pelvic and 
pectoral girdles, the mammalian temporal, 
periotic and tympanic bone, ete. 
Special attention is given in this depart- 
ment of the museum to the demonstration 
of human anatomy. Eventually itis hoped 
that every portion of man’s structure will 
be fully and exhaustively illustrated by 
perfect preparations. The museum should 
afford the medical student the opportunity 
of directly verifying his text-book infor- 
mation and should be a most valuable guide 
and aid to the practical anatomical study of 
the individual in the dissecting room. More- 
over, many structures, as we all realize, are 
never fully examined or completely demon- 
strable to the student in the dissecting 
room. Aside from the individual differ- 
ences in the cadaver in respect to develop- 
ment and state of preservation, and in the 
element of alteration of structure by dis- 
eased conditions, certain parts require 
special methods of preparation, such as 
the auditory apparatus; others necessitate 
for their exposition the sacrifice of sur- 
rounding structures to a degree not war- 
ranted by the practical requirement of 
getting the greatest amount of detail from 
the dissection of a single cadaver. More- 
SCIENCE. 
[N.S. Von. XIII. No. 329. 
over, even the structures, which are ordi- 
narily fully examined and demonstrated in 
the dissecting room on the fresh subject, can 
be shown with great profit in the museum in 
various preparations by different methods. 
For example, the museum contains hard- 
ened situs preparations, organs hardened, 
distended and fenestrated, injection and 
corrosion preparations, ete., to illustrate 
fully the anatomical structure of each part 
and to enable the student to extend and 
amplify his observations on the cadaver. 
Again, in connection with this depart- 
ment of the museum, I find it of distinct 
advantage to establish small comparative 
series designed to illustrate the development 
and normal anatomy, as well as the more 
important variations, of certain adult human 
conditions. These groups are accompanied 
by tablets, describing as fully as necessary 
the purpose of the exhibit, and drawings 
which emphasize the points at issue. 
Thus, for example, under the heading of 
the cardinal sinus of the adult human heart 
—as part of the series exhibiting cardiac 
anatomy—-the following group is placed 
with full explanatory text: 
1. Heart -and vascular system of Raja 
ocellata—various preparations to show em- 
bryonic type of mammalian heart before 
septal division, ducts of Cuvier and sym- 
metrical cardinal veins. 
2. Heart of Python molurus—hardened 
and distended, with sections showing: (a) 
sinus venosus of right auricle; (0) valves 
of sinus venosus and their relation to the 
Eustachian and Thebesian valves of the 
mammalian heart; (c) pulmonary veins; 
(d) persistent left precava. 
3. Heart of Struthio africanus—injected, 
showing persistent avian left precava— 
with its relations to pericardium and coro- 
nary vein. 
4. Ruminant heart (Antelope cervicapra) 
—mammalian type of normal persistence 
of left precava. 
