1914] BRIEFER ARTICLES 71 
The series of alcohols and xylols is prepared in tightly stoppered 
bottles and arranged in sequence. The tubes of washed material are 
placed in the bottle of lowest grade alcohol and transferred at proper 
intervals from bottle to bottle through the series. Any number of tubes 
are easily and rapidly handled by means of a pair of forceps. There is 
no danger of losing small objects, because the top of the tube is always 
Fic. 1.—Sectional diagrams: A, end of tube flared and covered with cloth; B, 
rapid method of tying cord; C , arrangement for washing material; water flows from 
the tap into the supply vessel (s), through the siphon into the tube of material (¢), 
through the cloth bottom, and overflows from the small vessel; a piece of rubber 
tubing (r) in the siphon adds flexibility. 
above the level of the reagent. With proper labels on the series bottles, 
the exact location of the material, and the next change, are always 
known at a glance. The material is left in the tubes through all the 
Processes up to the first bath in melted paraffine. 
_ _ The advantages of this method are as follows: there is no loss of time 
in handling large quantities of small light objects; washing is easy and 
thorough; there is no danger of injury to the most delicate material; no 
