[ 430 ] 
Capillary pores, water enters fugar by means of, p. it. Alcohol enters fugar by the 
fame means, ibid. The penetration of animal fubftances produced by the faculty 
of capillary pores, p, 12. 
Cafes in which horny excrefcences have appeared on the human body, p. q6. 
Cavallo , Mr. Deicription of a fimple micrometer for meafuring fmall angles with the 
teleicope, p. 2 83. 
Caufeway, Giant’s, many of its pillars confifl: of fine-grained, dark-coloured whin- 
Hone, p. 5 1 . 
Chalk, a great deal of chalky ground in the fouthern parts of England, p. 281. Vein 
of chalk runs from the fea in Devonihire, along the fouthern counties of England to 
Dover, ibid. Another vein parts off from that about Reading in Berkfhire, and 
continues its courfe by Dunflable, Baldock, and Gogmagog Hills, to the fea in ’Nor- 
folk, ibid. Confiderable quantities of chalk in the wolds of Yorkfhire, ibid. Bed 
of chalk difeovered near Ridlington in Rutland, ibid. Chalk about Ridlington 
harder chan that of the fouth of England, ibid. 
Chermes Lacca, account of, p. 228, Frequently adheres to the branches of the Mimofa 
cinerea, ibid. Vait quantities of exceedingly fmall animals obferved upon the lac 
and branches, ibid. Deicription of the male lac infed in its perfect Hate, p. 231. 
Defcription of the female lac infed in its perfed Hate, ibid. Mr. Hellot’s procefsfor 
extrading the colouring matter from dry lac, p. 233. 
■Confider aliens on the convenience of meafuring an arch of the meridian, and of the 
parallel of longitude, having the Obfervatory of Geneva for their common inter- 
fe&ion, p. ic6. 
D. 
DaWy, Ifaac, on the longitudes of Dunkirk and Paris from Greenwich, deduced from 
triangular meafurement, fuppofmg the earth to be an ellipfoid, p. 236. 
Dephlogifticated air. See Air, 
Defcription of a fimple micrometer for meafuring fmali angles with the telefcope, p. 
283. Defcription of the whalebone hygrometer, p. 419. 
Devonihire vein of chalk runs from the fea coaft of, along the fouthern counties of 
England to Dover, p. 281. A vein of chalk runs from the fea coaft of Devonihire 
to the lea coaft of Norfolk, ibid. 
Diftance between Aleppo and Bufforah, p. 137. 
Dover, vein of chalk, which runs from Devonihire, terminates at, p. 2S1. 
Drynefs, abfolute, can only be produced by fire, p. i. Obfervations on abfoiute dry- 
neis P 2. Drynefs produced by pot-aih, p. 4. Point of drynefs capable of fixa- 
tion by lime, p. £. 
Dunkirk, its longitude from Greenwich deduced from triangular meafurement, fun- 
poling the earth to be an ellipfoid, p, 236,, 
Elettricity ■ 
