[ 682 ] 
mean heighth of it there, in each month, p. 320. State of the barometer at Lyndon, 
in 1778, p. 547. 
Beaune, Mr. mistaken in fome chymical affertions, p. 11 — 20. 
Bell d^r. Miftakes in his theory of Vaulone’s pile engine, p, 121. And in the folution 
of a problem on the lubjedt, p. 126. 
Blijlers failed to relieve in a St. Vitus’s dance, p. 3. 
Bones. Head of the os humeri fawed off, and the motion of the limb preferved, p. 6. 
Treatment of a difeafe of the lower parts of the ulna, where it joins the carpus, 
p. 10. More than three inches of the enlarged bone fawed off, where the uhia 
joins the carpus, ibid. Difeafes of other joints recommended for cure by the fame 
operation, ibid. 
Bread-fruit. See Si tedium. 
Breajl. Eruption on the, relieved by falt-water, p. $4. 
C. 
■ Canal. See River. 
Cane . See Sugar-cane. 
Catoptric. Advantages of a new catoptric micrometer, p.421. See Micrometer. 
Cauk. Experiments on the Derby (hire, p. 17. Melted wiji antimony has appearances 
of Pvulandus’s falfe liver of antimony, p. 19. 
Cementing cryfialline particles the more immediate caufe of the confolidation of all Hones 
and marbles whatfoever, p. 8. 
Charcoal. Reflections on the different methods of refloring to life thofe choaked by, 
p. 329. 
Chirurgical improvements by Mr. White, p. 6. 
Clay. Change of it. into feld-fpar, and different gradations of the change, p. 12. 
Diflilled with fea- fait produces a fal ammoniac, p. 21. Quantity of allum afforded 
by the porcelane clay from Cornwall, ibid. 
Caecum. Vermicular procefs of the inteftinum ccecum in the Angolefe and Aflatic 
Orang, and like wife in the Gibbon, unknown to Galen, p. 148. 
Comet . Periodical time of that of 1770 inveftigated, and found not to be above five 
years and a half, p 68. Argument on which this conclufion is founded, thought 
; by the author equivalent to geometrical demonflration, p. 69. It confifls in the 
affumpdon of elements anfwering to a periodical time of five years and feven 
months, which are found perfectly confident with the obfervations of this comet, 
dbid. Its not appearing according to this hypothefis probably owing to the influence 
of Jupiter upon its orbit, p. 82. Table of what part .of the heavens it is to be 
looked 
