Sixth Supplement to Dana’s Mineralogy. 345 
Table showing Results of Observations for Personal Equation in Deter- 
mining Latitudes by Talcott’s Method. 
sf 
Station. |Date. | 5 3 Observers. Latitude. 
NS 
2 
No. of pairs 
of Stars. 
Prob. error’ 
Mt.Sebatti June, 
ebattis.|1g53. |No. 
1|J. E. Hilgard. | 23 | 44° 08’ 37'"82/0’ 
2\J.G.Oltmanns.| 23 38/"9 
4g 2\G. W. Dean. | 21 | 83° 59’ 58’""14) 0"" 
Columbi reu,") = 6 0. 21 58/10 
mbia. jigs4.|« 2/B 58/"-30 
“« 6 
L 
l 58°13) 0 
2 | 44° 12/ 42/"-791 0/11 0/762 62|0’-22 “25 
9 42''-79) 0"! 1} 0” 65\0'"47 
3 
3 
3 
21 
Oct. (No. 5|G. W. Dean. | 35 
Ragged Mt. |ie54 | « 5|S. Harris 3 
No.10 G. W. on 3 
44° a 4 bso toed 14\0 oy 4 
6 mca olU o 
1855. 5a’! 88 or? 13, 0'"-7410""-44 
Mt. Harris, |AUS: 
j “ 1O/E. Goodfellow. 3 
“oa ‘Aug. No. 5| E. Goodfellow, 30 |44° 21’ 06’"-37| 0’ "130" 71\0'r4] 
. Mt. Desert = 1856, 5/S. Harris. 30 06’"39| 0'7-14' 0'""76|0""-4¢ 
4 —__11856.| “51S. Harris. geil li aauletignienleaieiensbanenin els 
dele 
| Art. XXXIX.— Sixth na somes to Dana's Mineralogy; by 
; e Author. 
eee List of Works, ete. 
R. P. Gano, F.G.S., & W. G. Lerrsow: Manual of the Mineralogy of Great 
and Treland. ” 484 pp., 8vo, with numerous wood-cuts. London, 1 aaa. 
. ant contribution to the science, ep detailed descriptions of species and lo- 
calities, and new forms of crystals, ete. 
vend Nicot: Elements of Mineralogy, London, 1858. 
rt upon the Mineral and Geo nroings ~ apa of South Nama- 
eat a aul the ae ais Mineral Districts. London, 18 
Heyry ROOKE: On the Geometrical Isomo Hine of Crystals. 33 Q 
4to, Kaa ine the Veaneactions of the Roy. Soc, of London, 1857. Mr. 
here treated of the subject discussed in the writer's Mineralogy, i, 191-205, in 1884 
W. H. Mure (Prof. Min. Univ. of Cambridge): On the Anharmonic ratio 
“pation, gang them of a erystal in one sone, and on the Change of tee Stes 
es crystal. Also on the cert of epee tags rt Send - 
i hical M ruary and May, 1 
Ww. H. Miuizr: An improved yart of a ae ihe grt of any face in crys- 
jake clinging ic the Aderthic « system.—Phil. Mag., [4], xv, ae 
A. Dax les Propriétés hygroscopiques des Minéraux 
Famiile di des a hiciin, sane Chimie et de | rts [3], i 438, Aug. 1858. 
Silicate: ein Beitrag zur 
yon 
Gekronte Preisschrift. 236 
.—A work of high 
rous artificial crystals 
