Boiling in oil 

 of turpentine. 



DESTROYING INSECTS. 



be carried to the store, and made thoroughly dry, before 

 they are put into the following bath. 



Turpentine Bath. 



Into the second boiler is to be put as much oil of tur- 

 pentine, as will cover the matches to the depth of about an 

 inch; and this is to be heated gently, till it begins to boil. 

 But the moment it grows white and rises, the boiler must 

 be covered, and quickly lifted off the sand bath, lest the 

 oil should take fire. This boiling should be repeated two 

 or three times, which will take about half an hour: the 

 bath then is to be left to cool ; the matches are to be taken 

 out and wiped ; and lastly they are to be dried in the stove, 

 when they will be ready for use. 



This paper was approved by the Institute, at its meeting 

 on the 5th of May, on the report of Messrs. Carnot, 

 Deyeux, and Guyton de Morveau. 



VII. 



Letter from a Correspondent on the Means of destroying 

 the Insects which infest the Houses in large Towns* 



SIR, 



To Mr. NICHOLSON, 



Introduction. ^g you do not think it beneath the dignity of your Journal 

 to descend to the disgusting, although often necesary 

 business of considering the best method of destroying bugs 

 and fleas, the following observations, suggested by your 

 correspondent A in the last number of your Journal, are at 

 your service, if you think they are worth insertion. I 

 shall be very glad if they contribute to relieve your corre- 

 spondent or any other of your readers from one of the 

 *' miseries of human life." 



I am, Sir, 



Yours, 



St. Mary-le-bonc, May Gth, 1807. 



w. w. 



^Domestic in- 

 sects infest 

 dwellings in 



Bugs are often intolerable pests in houses in large towns ; 

 more especially in inns, hotels, lodging-houses, &c. which 



ar$ 



