MICHIGAN ACADEMY OF SCIENCE. 133 



Our five years of experience have taught us the following facts: 



1. Cats have been kept in perfect state of preservation for ten weeks, 

 being exposed to the outdoor temperature of late winter and early spring. 

 We are now ex})erinienting with a view of determining how far into the 

 summer specimens will resist decay. 



2. We have found nothing better than the skin, with which to wrap the 

 bodies to prevent moulding and the drying of the tissues. 



3. Cats that have not been bled seem to be })reserved just as well as those 

 that have had the blood removed previous to enbalming. 



4. We inject through the fermoral vein instead of the femoral artery, 

 primarily because it is much easier to insert the canula and also because 

 it sends the em]>alming fluid in the same direction as is taken by the blood. 



5. It has been demonstrated that the viscera need not be removed for 

 weeks. 



6. We have found that the use of an injecting' syringe for introducing the 

 embalming fluid has brought disastrous results. It means too limited time 

 at too great a pressure. Less pressure continued over a period of from one 

 to three hours insures far better penetration. 



East Lansing, April 1, 1909. 



