800 — 3.50 
a 
830 
= 0.7831325 
Quod ad velocitatem attinet, qua temperatura ab ele- 
vationibus in atmospliæra decrescit, erit ex demonstratis 
in antecedentibus 
N t v zzz — Log. Hyp. [x z=z — Log. Hyp. [ i — — a)] , 
et indc per differ entiationem 
Md yp 
1 — — a) 
Nrdto zz — Ncpdx 
5 
M\p d\Js 
M(\p — cc) 
— — N\p(pdx zz — Ntodx 
zz - — Nr to 
( d x\ d X 
r J r 
Log. Hyp. ix 
vel denique multiplicatione utrinque facta per 830 , atque 
loco ipsius 830 d\p substituendo 3 dt 
3 M\p . dt 
1 — M(\Jj — a) 
atque sic tandem 
/ d x\ 
830 (t) 
Log. Hyp. /X 
» (-1 = - 
\dt J 8 i 
3 M . r a 
830 (X . Log. Hyperb. fx 
(52) 
ideoque si ponamus *zz o , 
' a dX 
dt 
) = 
3 [ 1 — 
830 [\^(o) — cc] . fx(o ) . Log. Hyp. fx{o) 
(52. 1) 
