APPENDIX. 
THE PRESERVATION OF MATERIAL.* 
The method commonly used in the preparation of material for 
dissecting purposes consists in first embalming the body with 
suitable preserving fluids; afterwards filling the arteries with a 
colored injection mass, so that they are more easily traced. The 
objects served by embalming are: (1) preserving the body from 
decomposition for a sufficient length of time to complete the 
dissection; (2) keeping the body as nearly intact as possible; and 
(3) having the organs in good condition for study. The point last 
mentioned is an important one, since much depends on having the 
parts of the animal in such condition that they are easily and 
comfortably handled, and also easily observed. The desired results 
are accomplished, first, by introducing the preserving fluid through 
the bloodvessels, instead of by immersing the animal, as was 
formerly the practice; secondly, by using in the preserving fluid 
such materials as will leave the organs in a condition as near the 
natural one as possible and at the same time keep them moist and 
flexible throughout dissection 
A suitable fluid for the purpose is that recommended by Keillert 
for the preservation of human subjects. The formula is as follows: 
Ra@inaclitier. sai ea S eeb 2 5 eee Segte ee 1.5 parts 
CarboliceNeiditnse8 aie. oan eS es Dee DR eee 
GIN Genie a: wi Me coor ait cen RMR rc NOMOW a 
Wicibeteay, SMe pegite aie Geaira dh Phage uae SOA0. a 
100.0 
*The methods here given apply only to the preservation of specimens for 
ordinary dissection, either singly, or in numbers for a laboratory course; witha few 
observations on the difficulties which are likely to be experienced. Especially in 
the matter of injections, the student who has acquired some knowledge of the 
vascular system will be able to make complete injections of the portal system and 
also satisfactory injections of the systemic veins, though the latter are somewhat 
more difficult on account of the presence of valves in the vessels. Finer vascular 
injections and injections of the lymphatic system according to the directions given 
in the anatomical textbooks may also be suggested. 
tKeiller, W. ‘On the Preservation of Subjects, etc.’ 
Anatomy), Vol. II., 1902-3. 
’ 
(American Journal of 
