Deflogijlkated a\ry or oxygen, how produced, Vol. II. p. aog — Vol. IV. p. 2. 



when abforbed, Vol. IV. p. i — obfervations and experiments concern- 

 ing. Vol. IV. p. I to II — proportion of it in the atmofphere, p. 417, 

 Delineations and projections of the tranlit of Venus in 1769, Vol. I. p. 5, 27, 



36, 59, 66. 



of Mercury, Vol. I. p. 8. 



Denfiiy of the atmofphere, Vol. II. p. 96 — delcription of at L. Erie, &c. 



Vol. IV. p. 225. 

 Deveze (Dr. J.J his eflay on a new method of treating the efiiifion which 



collecfls under the fcuU after fraiflures of tlie head. Vol. iV. p. 433. 

 Deius in the Weftern country very haivy, but innoxious, Vol. IV. p. 225. 

 Diameter of the fun. Vol. 1. p. 52, 79, 84, loi — appendix iv. — of Venus, 



ib. — of Mercury, appendix, 52. 

 (apparent) of anobjeft, how to alccrtain it, Vol. I. p. 98 — intereft- 



ing experiments attending it, ib. 

 Diabetes witli fever, how cured. Vol. II. p. 286. 

 Diet commonly ufed in the United States the caufe of certain difeafes. Vol. 



III. p. vi. 

 Dipus, or Jerboa, account of an American fpecies of, Vol. IV. p. 114. 

 Difeafes prevalent in N. America, Vol. III. p iii. 



general caufcs of. Vol. III. p. vi. 



of marihy places, obfervations on. Vol. IV. p. 136. 



D fiH/atioii oi perCimons, memoir on tlie. Vol. I. p. 231. 



Donations to the A. P. Soc. lift of. Vol. II. p. 398 — Vol. III. p. 3JI — 



Vol. IV. p xvii 

 Dogs, certain ones yield fine fleeces, Vol. IV. p. 151. 

 Drefs (American I unappropriate to the climate. Vol. III. p. vi, 

 Dublin, proportion of deaths there, Vol. III. p. 59. 

 Dumb, mode of teaching fuch to fpeak. Vol. III. p. 310. 

 Dyes of the N. American Indi.ms, account of fome of the principal, Vol. 



III. p. 222 — fartlier obfervations on, Vol. I. p. 255, 256, 26r, 263. 

 Dymond and Wales obferve the tranfit of Venus in 1769 at Hudfon's bay, 



Vol. I. appendix p. iv. 

 Dyfentery, a cure for, Vol. II. p. 285, 291. 



Earth her diftance from the fun, Vol. I. p. 62, 103 — the Parifian hypotlaefis 

 of die excentricity of her orb and diftance from the fun, 103 — Dr. 

 Franklin's conjeftures on tlie formation of. Vol. III. p. i — his que- 

 ries and conjectures relating to the theory of, ib. p. 10 — how to calcu- 

 late the nutation of her axis. Vol. IV. p. 32. 



, refleflions on the early condition of the, Vol. IV. p. 503. 



'Earthquakes, Vol. I. p. 282, 285'. 



Earths (American) defcribed. Vol. I. pref. p. xi. 



Earthy fubftance, a curious one found at Niagara falls, V' 1. III. p. 17. 



Eaflerly rxjinds in hot -weather, their caufe fuggefted, Vol. II. p. 91. 



Eclipfe, obfervations on a folar and lunar. Vol. II. p. 239. 



4 B Eclipfes 



