LMO ON THE CHOICE AND 1>SE OF A RAZOR. 



Dry windy win- - Dry windy weather is then advantageous, fince the oxi- 

 the'feed^ *** S en neceflary for the grand work of the germination and 

 growth of the tender plants is furniflied eafily and abundantly 

 by the atmofpherc. After this period, that is to fay, after 

 their infancy, the plants no longer require oxigen, in order 

 to profper, but a mephitic air, as I have already fhewn in 

 my memoir On tJw Fertility of the Earth,* becaufe in this 

 they find their principal nourifhment : thus when the pe- 

 riod has elapfed, oxigen is but of very limited utility to 

 vegetation. 



X. 



On the Choice and Ufe of a Razor. By a CorrefpondenL 



To Mr. NICHOLSON. 

 SIR, 



January 26, 1 802. 



iF you think the following obfervations applicable to your 

 paper on Shaving, you will' infert them in. fome future 

 Number of your Journal. 



W. B. 



On the choice of ^ n choofing a razor (befides the marks you enumerate) 

 a razor. prefer that blade whofe edge is leaft blunted or turned after 



being two or three times drawn upon its edge, from heel 'to 

 point, on a bit of horn or the thumb nail. 

 Scraping. In itraping care mould be taken to give, the finifhing ftrokes 



in the direction in which it is about to be ufed : that is, if the 

 drawing ftroke in (having is made from heel to point, the 

 razor mould be drawn from heel to point upon the flrap, and 

 vice verfd. This obfervation applies to all fine edges, efpe- 

 cially to furgical inftruments. For a ftrong beard, a rounder 

 edge is given by a loofe flrap ; but a keener and more 

 durable one is given by a flrap fixed upon fome melailic fub- 

 fiance. 



• Delia Fertilita della Terra. Memoria del Do£t. J. Carradori, 

 Premiata della R. Societa BconomicadiFirenxe.nei raefedi Giugno 

 del ITOfc 



This 



