771 



subjects treated in this way for two years in the cold storage and 

 when placed upon the dissecting table they had all the appearance 

 of fresh bodies. The bandages are not removed from the legs and 

 arms until they are about to be dissected, thus preventing the skin 

 from drying before it is removed. 



My experience, therefore, is that subjects may be preserved per- 

 fectly and in the natural condition for years with carbolic acid, vase- 

 line and freezing. 



The freezing apparatus and vault. In applying cold 

 storage in our laboratory it was necessary to adjust it to the apparatus 

 we already had on hand. The boilers for heating the building are 

 60 horse-power strong and are employed during the day time of the 

 winter only. It was necessary to convert them into high pressure 

 boilers while the heating apparatus of the building requires low 

 pressure steam. If this could not be the case it would be necessary 

 to add an additional boiler and in all probability an additional fire- 

 man with additional expense for coal during the winter. This difficulty 

 was overcome by the introduction of a reducing valve between the 

 boilers and the heating system, which reduced the steam pressure to 

 about one atmosphere for the heating system leaving high pressure 

 in the boilers for the engine. The exhausted steam from the engine is 

 allowed to escape into the heating apparatus and this performs an 

 additional work, in heating the building after it comes from the 

 engine. An automatic pump forces the condensed steam back into 

 the boilers. 



The engineer is in the building during the day time only so we 

 desired to construct our apparatus such a manner so as to accomplish 

 the work for the whole twenty-four hours by operating the engine 

 during the day time only. If this could not the case it would cause 

 a considerable extra-expense to operate the machine all night. This 

 obstacle was overcome most successfully. In fact our ice machine 

 and vault can do all the work we desire of it by working 8 or 10 hours 

 per week. 



Then the apparatus must be relatively inexpensive. Before decid- 

 ing upon the machine we purchased we communicated with a number 

 of firms and believe that we have procured the cheapest as well as 

 the best. Our machine and vault were constructed by the Remington 

 Machine Company of Wilmington, Delaware, and cost considerably less 

 than $ 4000. The cost of operating the machine in addition to our 

 ordinary expenses of heating the building has been less than $ 100 

 a year. The capacity of the vault is about 200 subjects but can be 

 enlarged to 1000 or more if necessary. 



