Charles Thomas Jackson. — Woodworth. 95 
A shark's tooth, a cetacean vertebra, lignite and a cast of a Tellina, in 
Marshfield in a clay marl over a green sand, 30 feet from the surface. 
Also Proc. Amer. Assoc. Adv. Sci., iv, 1851, p. 251. 
Remarks on pot-holes in N. H. and N. J., p. 324. Also Proc. Amer. 
Assoc. Adv. Sci., iv, 188-190. 
Some observations on the age of the sandstones of the United States, 
pp. 335-336. 
On crystals of Allanite, containing protoxide of cereum in Labrador 
feldspar at Franklin, N. J., p. 326. Also Proc. Amer. Assoc. Adv. Sci., 
IV, 1851, 324. 
Appointed a committee with Dr. N. B. Shurtleff and Dr. Cabot, Jr., 
to memorialize Congress on the subject of attaching a corps of natural- 
ists to the Mexican Boundary Commission, p. 326, 330. 
Observations upon the age of the sandstones of the U. S., pp. 335- 
336; 337-339. Thinks age of all our red sandstones questionable. 
Bull. Oeol. Sac. France, {II) vii, 1850. 
Remarque sur la geologic du district metallifere du Lac Superior, pp. 
667-673. 
An address before the Plymouth Co. Agricultural society, Bridgewa- 
ter, Sept. 25, 1850, 8to, pp. 29. 
1851. 
Amer. Jour. Sci., xi. 
Geological report on the lake Superior copper region, pp. 147-148. 
Also Karsten Archiv., xxv, 1853, 656-667. A notice. 
Proc. Boston Soc. Nat. Hist., iv, 1854. 
Description and analyses of pitch stone from Isle Royale, lake Super- 
ior, pp. 47-49. He argues that phosphate of lime is not necessarily of 
organic origin, since it occurs in igneous rocks. 
Remarks on "Asphaltic coal" from New Brunswick, pp. .55-56. Also 
exhibits sticks of phosphorus made from phosphate of lime from New 
Jersey. 
On coal and ganoid fishes from the head of the bay of Fundy, pp. 64- 
65. Also ibid., pp. 73-71, together with observations on Sigillaria. 
Remarks on the insoluble portion of the coal from Hillsboro, N. B.. 
p. 81. 
Proc. Amer. Assoc. Adv. Sci, 4th meeting, Neiv Haven, 1850. 1851. 
On ancient pot-holes in rocks, pp. 188-190. 
On Tertiary fossils at Marshfield, Mass, p. 251. Paper not published. 
See Proc. Boston Soc, N. H., iii, 323. 
Description and analysis of .\llanitf' froai Franklin, N. J., pp. 323- 
324. 
Description of Bismuthic Tellurium or Tetradymite from the gold 
mine of Whitehall, V^'irginia, with an analysis of the mineral, and its re- 
lations to the gold associated with it, pp. 324-325. 
On the manufacture of zinc and zinc white, pp. 335-337. Description 
of works at Franklin, N. J., and of process and mills at Newark, N. J. 
Analysis of red marl of Springfield, Mass., pp. .337-338. An igneous 
contact product. Showed wood painted with it. 
Remarks on the limits of barrenness and fertility in soils, p. 338. 
