and Laboratory Methods. 2439 



complete sterilization of the milk, which destroys the acid bacteria but not the 

 peptonizing forms, only offers a greater chance for the putrefying bacteria to 

 grow in the milk. The lactic bacteria are, therefore, a means of protecting the 

 milk from these injurious changes. He further tests the eighteen different spe- 

 cies of bacteria found, and among them finds two which are distinctly poisonous, 

 both belonging to the groups of bacteria already described by Fliigge. 



H. w. c. 



GENERAL LABORATORY TECHNIQUE. 



RAYMOND PEARL, University of Michigan. 



Books and Papers for Review should be Sent to Raymond Pearl, Zoological Laboratory, 



University of Michigan, Ann Arbor, Mich. 



^. n a- ,.. ^ ...... . A reliable and altogether satisfactory 



The Preservation of Anatomical Material. , . . 



method of preserving material for dis- 

 section is a thing which has been long desired by teachers of anatomy. Keiller 

 (" On the Preservation of Subjects for Dissection by Injection with Formalin 

 and Carbolic Acid Solutions and Storage in Similar Solutions." Proc. Assos. 

 Amer. Anat. 16th Session, p. vii-viii, 1903) offers a series of solutions which 

 he has found very satisfactory in preserving human subjects. The formulae for 

 these solutions and the special purpose for which each is designed are as 

 follows : 



Fo?-mula i. — For section (macroscopic) and special demonstration of the viscera 

 in situ : 

 Formalin --..-.-.. 2.5 



Carbolic acid - - - - - - - - - '2.5 



Glycerine --....... IQ.O 



Water - - - q. s. to 100.0 



Formula 2. — For ordinary dissecting purposes : 



Formalin --.--..-. 1.5 



Carbolic acid --------- 2.5 



Glycerine ----... . - 10. 



Water - - q. s. to lOO.O 



Formula J. — For operative surgery : 



Formalin -...-...- i.O 



Carbolic acid --------- 2.5 



Glycerine --------- 10.0 



Water - - - q. s. to 100.0 



Formula 4. — For storage tanks : 



Formalin --.--.... 1.0 



Carbolic acid --------- 2.0 



Water - - - - - - - - q. s. to 100.0 



Glycerine to the amount of '1)'2 per cent, will be an advantage, but is 

 not necessary. 



