974 HAELLSTROEM 
IV. Jnitra latiludines :15° et 25° boreales.  Observationes institutae ann. 
1827 d. 10 — 14 Nov., 1828 d. 7 — 14 Apr., d, 17 — 21 Nov., et d. 
15 — 29 Dec. in oceano Pacifico, nec non ann. 1829 d. 24 — 29 Maji in 
oceano Atlantico. Summa dierum — 40. Limites valorum singularium 24°,5 
et 18°,5. (Calculus dat: 
R = 20°,84 + 0,60627 Sin (h.15° + 59°. 22’,1) 
—+- 0,09858 Sir (4.30 + 56. 6,9); 
unde valor maximus — 21°,54, hora 1,69 = 1h. 41,4 p. m. 
rminimus —.20,341, hora 15,15 — 3, T8 am. 
Insttuta comparatio praebet: 
Hora Calor secundum Calor secundum 
Hora 
Differentia. Differentia. 
diei. diei. « 
observat. calcul. observat. calcul. 
219,40 | 219,45 | + 0°,05 20°,45 | 20°,40 | — 0°,05 
21,52 20,56 
21,54 20,33 
21,49 20,51 
21,38 20,32 
D À © 
21,25 20,37 
21,07 20,45 
20,91: 20,58 
20,76 20,75 
20,64 20,94 
20,54 21,13 
26,46 21,51 
3 
4 
5 
6 
7 
8 
9 
Eh bi 
A © 
