380 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



out, and after imbedding in paraffin or celloidin, sections are made. 

 These sections may be stained and mounted in various ways. 



Burette for Removing- Definite Quantities of Sterile Fluids.* — 

 Dr. St. Epstein describes an apparatus for removing measured quantities 

 of sterile fluids. It consists of a flask A (fig. 92), fitted with a cap C. 

 In the cap are two openings, one for a side tube R plugged at Z with 

 cotton-wool, the other D, melted into the cap, carries a burette B, the 

 lower end of which can be closed at N by means of the rod K. The 

 lower end of the burette is protected by the guard M, and its upper end 



Fig. 92. 



is plugged with cotton-wool E. The apparatus may be sterilised with 

 or without fluid. By blowing down tbe tube R the sterile liquid in A is 

 driven up into the burette B, from which any desired quantity can be 

 removed by raising or turning the rod K. After use the cup-guard M 

 is replaced and pressed against the end of the burette which is vaselined. 

 In M is a minute hole o to let the air escape. 



"Hanging-Block" Preparation for observing developing Bacteria.f 

 — A. W. Hill cuts a cube of agar from a Petri dish of solidified jelly. 

 The organism to be examined — taken from emulsions, from solid cul- 



* Centralbl. Bakt., l ,e Abt. Orig., xxxi. (1902) pp. 335-6 (1 fig.). 



t Proc. Anier. Soc. Bacterid. See Journ. App. Micr., v. (1902) p. 1713. 



