, 
168 M. Delesse on Gilobuliferous Rocks. 
the idloming conclusions, viz 
1. That the elastic force of maou air isa force available for 
all ~ purposes for which stationary powers are require 
That it isan eminently economical source of pow er ; being 
in this respect — to steam, as usually employed, in the ratio 
of two or thre 
3. That oc ; appears to be at present more doubtful to what 
extent it is applicable, if at all, to the purposes of ocean naviga- 
ae n, es value in that respect remains yet to be experimentally 
aoe of Alabama, Nov. 2, 1853. 
Art. XI1.— Researches on Globuliferous Rocks ; by M. Devessé, 
Ingenieur des Min srs Professeur Honoraire de Geologie 4 la 
Faqulté de Besancon 
- [Tis important paper by M. Delesse, is published in the 
Transactions of the acing eal Society of France, and is one 
among the many contributions of its author to our knowledge of 
the structure of rocks and their minerals.* We give our readers 
an abstract of it, presenting the prominent facts and the author’s 
conclusions. The article is illustrated by several elegant plates, 
only a few figures from which we have copied.—Ebs. | 
Under the name of Guiosunirerous Rocks, those rocks are 
ok eae mere contain certain minerals disseminated through 
£ 
f some of the papers of M. Delesse on these subjects. 
sur le Sciul pe Vosges.—Ann. de la Soc, d’Emulation des Vosges, ¥4 
end Cate, pies 
eb provenant de la Fusion des Roches.—Bull. de la Soe. 
Geol de France ah iv, 1380, 1847. 
3. Notice Sur les Ciarkesires de l Arkose dans les Vosges.—Bib. Univ. de Geneve, 
ur le pouvoir Magnetique des Roches— oy ch at de Pha 1849, xxv, 
194, and Annales des Mines, [4], xiv, 81, 429 rp ae Xvi, 323, 
7. a re ches sur le Porphyre Quartzifére. “Bull de la Soc. Geol, ‘de Fr. [2], vi, 
629, 1 
8. rs le Porphyre Amygdaloide d’Oberstein—Ann, des mines, [4], xvi, 511, 
9. Recherches sur ’Euphotide.—Bull. Soc. Geol. de France, [2], vi, 547, 1849. 
10. Sur Ja Constitution Minéralogique et ee des des HB 
Degas avec tourmalines de St, Etienne-—Ann. des Mines, [4], xvi, 184 
11. Sur la Constitution Minéralogique et Che ome de la Syenite du ballon d’Al- 
sace, Mem. de la Soc, d’Emulation du Doubs. 1 
12. Sur la tg des Alps.—Bull. de la ae Ode de France, [2], vi, 230, 1849. 
18. Serpentine des Vosges, Ann. des Mines, [4], sii, 309, 1850. 
