Of Coffee, and the Art of preparing it, 1 1 7 



not, in London, amount to one penny a day, when coffee 

 is made twice a day for four persons. 



'* It is a curious fact, tiut it is nevertheless most certain, 

 that, in some cases, spirits of wine is cheaper, when em- 

 ployed as fuel, even than wood. With a spirit lamp con- 

 structed on Areand's principle, but wiih a chimney made 

 of thin sheet iron, which 1 cau:Jed to be made about seven 

 years ago, (and which ha? since become very common in 

 Paris*,) I heated a suffit'ient quantity of cold water, to 

 make coffee for the breakfast of two person?, and kept the 

 coffee boiling hot, one hour after it was made, witii as 

 much spirits of wine as cost two sous, or one penny Eng- 

 lish money." 



Description of the Figures. 



(c a — (Fig. 1. PI. III.) is the cylindrical strainer, into which 

 the ground coffee is put, in order that boiling hot water 

 may be poured on it ; v.'hen this strainer is filled with 

 boiling water (after ground coffee has been properly 

 pressed down on its bottom.) 



*' I — is the ground coffee in its place. 



" c — is the handle of the rammer which is represented in 

 its place. 



^' d — is the reservoir for receiving the coffee which de- 

 scends into it from the strainer; and 



" e — is the spout through which the coffee is poured out. 



*' f — is the boiler, into which a sinall quantity of water is 

 put, for the sole purpose of generating steam, for 

 keeping the reservoir hot. 



«« ^— is the opening by which the water is poured into the 

 boiler or out of it ; this opening has a fiat cover, which 

 moves on a hinge, that is represeiucd in the figure. 



" The boiler is of a conical lorm, and is enlarged a little at 

 its upper extremity, in otder to receive ;he cover v« hich 

 closes it above. 



" The reservoir and the boiler are fixed together above by 

 solderinsr, so that the reservoir remains suspended in 

 the boiler. 



** The cvlindrical strainer is suspended on the upper ex- 

 tremity of the reservoir, by means of a flat j.rojecting 

 brim aloui two-tenths of an inch broad. 



*' h — is the hoop, made of sheet-copper, and perforated 

 with a row of holes, on which the boiler reposes : a 



* " I intend, if possible, to send one of '.hcse spirit I;^ii)s to England, 

 wirli this KbSiiy, in order that it may he put into tl;e Jiands of some v ork- 

 Qkau tlicrc. wuu iiKiy be liit'poecd to imit.iii it.'' 



11 3 part 



