204 APPENDIX. 



LEMEET (Nicholas). Prep, of Solar Phosph. : Cours de Chy- 

 mie. (1675 ; the best edition of this remarkable work was 

 published at Paris in 1713.) Lemery's knowledge of Phos- 

 phorescence was greater than that of any man of his time. 

 The pages 482, 483 et seq. of his work on Chemistry, may 

 be read with interest at the present day. It is exceedingly 

 remarkable that his explanation, constantly repeated, of the 

 light being owed to rapid molecular motion, is precisely that 

 which is becoming adopted at present. 



BAUDTJIN. (Some authors write his name Balduin, and Baldwin.) 

 On his Phosphorus produced from Nitrate of Lime. Phos- 

 phorus Hermeticus, seu magnes Luminaris, 1675 ; see also 

 Phil. Trans. Abrid. ii. p. 368. 



HOMBEEG. On his Phosphorus. Memoires de VAcademie de 

 Paris, 1693, p. 307. He prepared it by heating sal-ammoniac 

 and chalk. The result was carbonate of ammonia which 

 distilled and dry-fused chloride of Calcium, which shines in 

 the dark when struck. 



HATTKSBEE. On the Luminosity produced by the Friction of 

 Mercury in the Barometer Yacuurn. Physico-mechanical Ex- 

 periments. (London, 1709.) " Experiments on the attrition 

 of bodies in vacuo : Phil. Trans., 1705. In this paper the author 

 proves by direct experiment, that when steel is rubbed against 

 flint, the sparks are not produced without the presence of air ; 

 hence it was afterwards discovered that, in this case, the light 

 is produced by the rapid combustion of small particles of 

 steel. 



BOUEYES (Father). " Concerning the Luminous Appearance 

 observable in the Wake of Ships," &c. : Phil. Trans., 1713. 

 I have not alluded to this paper in my historical notes, as the 

 author brings forward no observations of particular value, and 

 has not the most remote idea of the true cause of this phos- 

 phoric appearance. " The production of the light," he says, 

 " depends very much on the quality of the water." The au- 

 thor's observations are however interesting, as having been 

 made in the Indian Seas. 



