G8 \\. J. WOOD ON EBONISING LABORATORY TABLES. 



mixed together while quite hot, then allowed to cool. Then filter, 

 and dilute the filtrate to one litre. This solution is applied to the 

 wood the same as a, the wood being allowed to dry thoroughly 

 after each application. 



(c) At the end of this operation all crystals covering the 

 surface of the wood are to be washed off with clean water. 



(d) Once more dry the wood thoroughly and then paint over 

 with cottonseed or raw linseed oil. Leave the oil for one day 

 and then rub dry. 



This preparation takes about six days, allowing two days for a, 

 two for b, one for c, and one for d. I found it advisable to rub 

 the table thoroughly with a dry absorbent duster for two or 

 three days in succession, as the oil is not thoroughly removed 

 with one rubbing. 



I understand that the tables in the laboratory of the Danish 

 investigation vessel Thor are treated in this manner. The result 

 is a beautiful black surface which will withstand the usual 

 reagents used in biological work. 



Joura. <s<"/,<tt Mia-oscopical Club, Ser. 2, Vol. /A'.. No. 54, April U'04. 



