2 Si Scietttijic NfWSy ifc, 



'It was in vain he tried all the remedies which medicine, affifted by the natural fciencej, 

 could ofFer. Life and ftrength abandoned him by flow and painful degrees, and towards 

 the end of the 6th (republican) year, his decay became more evident ; his memory failed ; 

 and at length, on the 3d of Pluvoife, in the 7th year, at the age of 59, he completed his 

 brilliant career, much regretted by a family who loved him, a country to which he was an 

 honour, and Europe, whofe knowledge he had increafed. 



■ By his fide, and at the fame moment, a violent death robbed the fciences of a young man 

 whofe induftry and talents had afforded the moft flattering hopes. (Qu. ?J 



1 mufl here confciude this (hort account ; and it may eafily be perceived that I am very 

 far from making the eloge of my illuftrious countryman. I had neither the neceflary mate- 

 j'ials, nor fufficient means ; that interefling taflc is referved for one who has been the com- 

 panion of his travfels and labours, and who, by living habitually with him, has had the advan- 

 tage of obferving his manner of acting and thinking. 



A. 



SCIENTIFIC NEWS, ACCOUNTS OF BOOKS, bfc. 

 On Steam. 



uN apparatus has teen exhibited to the Linen Board in Dublin, which, added to the 

 ■boilers ufed in bleach-greens, will colle£t the fteam, and communicate it to the machinery for 

 ■ turning the mill-work in room of, or in aid of, water-mills. 



The truftees of the linen manufaflory are fo well fatisfied with this invention, that they 

 . give a confiderable fum in aid of thofe who will firft make trial of it in the large way. 



There can be no doubt but that the machinery ufed in the linen manufacture may be 

 wrought' by the power of fteam : and it is certain alfo, that a confiderable quantity of fteam 

 is produced by the common mode of boiling the Hnen ; which if collcfled, and applied to 

 .proper machinery, would do fomewhat of work. Whether the power of this fteam, as a 

 hrft mover, is adequate to the coft of the machinery, is a point on which I have yet heard 

 nothing conclufive. To determine this point, we require to know what quantum of fteam 

 is equal to any known power; and what quantum of fteam a boiler of a certain fize will 

 generate, kept a given time in a boiling ftate ? Or, in other words, how many cubic feet 

 of water converted into fteam, is equal to the power of one horfe ? In the ftate of boiling, 

 rwhat quantity of fteam will be generated from a given quantity of water in a given time .■' 



Mr. Nicholfon will oblige a conftant reader, by referring in his next Journal to where 

 the above data are to be found. A. 



Londonderry, Augiijt, I7'99- 

 On the theory of the dilation of fteam and other elaftic fluids, there is a valuable treatife 

 by Prony, in the fecond cahier of the Journal de FEcole Polytechriique ; and the fame author 

 ihas treated the fubjefl very ably in his ArchiteBure HydrauUque. De/agnliers has given fome 

 good documents of Beighton, in his Cotirfe ofLe^ures, with regard to -the atmofpheric fteam- 



