202 CHEMISTRY. 



AMPERE (AND. MAR.). Lettre a Berthollet, sur la determination des 

 proportions dans lesquelles les corps se combinent d'apres le nombre et 

 la disposition respective des molecules dont leurs particules integrantes 

 sont composees; (extrait des Annales de Chimie, Avril 1814.) 8 



ANONYMOUS. 



ARGUMENT (the) of sulphur or no sulphur in waters discussed; with a 

 comparison of the waters of Aix-la-Chapelle, Bath, and Bristol ; 

 wherein the sulphur is restored to the two first and the contents of the 

 last are ascertained with a greater degree of precision than in the essay 

 of a late adept [C. Lucas] ; being the subject of a correspondence be- 

 tween the author of the "Methodical synopsis of mineral waters" [.I. 

 Rutty] and W. R. ; to which are subjoined a more explicit account 

 of the nitre of the ancients ; the analysis of milk by J. Rutty ; a 

 practical dissertation on the uses of goat's whey (by J. Kennedy) ; 

 3pts. 8 Dublin, 1762. 



ATTEMPT (an) for the explication of the phenomena observable in an 

 experiment published by R. Boyle touching the aire; by R. II. 

 [Hooke]. 8 London, 1661. 



BRIEF (a) account of the cycle of the lunes ; by the author of the cycle 

 of the weather [G. Mackenzie]. 8 Perth, 1824. 



CHRYSOPCEI/E magister a schola sua Minervali donafits; oder billiges 

 Lehr-geldt welches dem Hr. Wilhelm Freyherrn von Schrceder aus der 

 Royal-Societaet von Engeland fur den Unterricht rom Goldtmacheu 

 ...... richtig bezahlet wird. Durch J. A. von L. 12 Gruneburg, 



1685. 



DIFFICILES nugcB ; or observations touching the ...... air. See Anony- 



mous. Difficiles nuga>, &c. 8 1674. (Mechanics?) 



ESSAI de chimie mechanique [by G. L. Lesage]. 4- 



This essni was never published, and this copy has neither printed title-page nor 

 preface. It contains many manuscript notes, with a manuscript title and samnuiire 

 by the author, who promises to print a title, &c. when certain other dissertations, 

 which he was then writing, should be published together with this. Th is essai seems 

 to have been printed at Geneva about 1758. 



ESSAI sur 1'art d' ...... extraire le sucre, &c. See Anonymous. Essai sur 



1'art de cultiver la canne, &c. 8 1781. (Botany.) 

 FIRST (the) part of a dictionary of chemistry; by J. K. [Keir]. 4 



London, 1789. 

 Is it impossible to free the atmosphere of London from the smoke with 



which it is hourly impregnated ? 8 London. 



LAPIDE (de) philosophorum tractatus duodecim ; author sum qui Divi 

 Leschi genus amo [M. Sendivogius.] 12 Francofurti, 1611. 



Divi Leschi genus amo, seu Michaelis Sendiuogij, ut hoc anagrammatismo patet, 

 et quia Leschum, seu genus divi Leschi, amat, id est Polonos, apud quos colitur 

 sanctus ille, qui eorum rex olim fuit. Borellii Bibl. Cliimica. 



LECONS elementaires de mathematiques, contenant les principes ...... des 



meteores, &c. See Anonymous. Lec.ons elementaires, &c. 8 1784. 



(Mathematics.) 

 NOTICE sornmaire d'un baro-thermometre nouvellement invente a Lon- 



dres en 1764, et rendu public 1'annee suivante sous le nom de aero- 



stathmion, ou vraye balance de I 'atmosphere. 4 

 OBSERVATIONS sur l'arc-en-ciel. See Anonymous. Observations, &c. 



8 1788. (Optics.) 

 R EPOUT on the instruments employed in, and on the plan of a journal 



