158 



serve as a satisfactory permanent preservative. Material kept in it 

 some three months has thus far shown no deterioration. Sheep's 

 brains prepared in this way retain their original color and form and 

 show almost no change in volume. A brain that before treat- 

 ment (June 20) measured 101 cubic centimeters, when finally prepared 

 (July 15) measured 103 cubic centimeters, a difference altogether un- 

 important. 



The advantages that this method presents lie chiefly in its sim- 

 plicity. Without requiring gradual and delicate transfers from one 

 fluid to another, it accomplishes a satisfactory preservation in which 

 the color, form, and volume of the preparation remain almost if not 

 quite normal. 



Papers cited. 



'94. BoKN, G. Demonstration einer Anzahl in Formaldehyrl (Formol) 

 gehärteter tnenschlicher Gehirne. Schlcsische Geaellschaft für vatei*- 

 ländische Kultur. Med. Sek., 2. März 1894. 



'94. Hofer, B. Conservirung von Fischen. Verhandlungen der deut- 

 schen zoologischen Gesellschaft, 1894, p. 93. 



'94. HoTEB, H., jun. Ueber die Anwendung des Formaldeliyds in der 

 histologischen Technik. Verhandlungen der anatomischen Gesellschaft, 

 1894, p. 23(i. 



'94. Lanzillotti - BuoNSANTi , A. Nuovo processo di conservaziono dei 

 eentri nervosi. Monitore Zoologico Italiano, V, p. 273. 



'94. Weigket, C, Technik. Ergebnisse der Anatomie und Entwicke- 

 lungsgeschichte, III, p. 1, 



