Sketch of Dr. John Locke. — Wiuchell. 355 
A now reflecting level and goniometer. Rep. 1st. 2d and 3d meetings, 
Assoc. Am. Geol. and Nat., p. 238 [1843]. 
Notice of a prostrate forest under the diluvium of Ohio. Rep. 1st. 2d, 
and 3d meetings, Assoc. Am. Geol. and Nat. [1843J, pp. 240-41. 
Observations on Cryptoli thus tesselatus. Proc. Phil. Acad. Sci., 1843, 
pp. 196-236. 
Description of Ceraurus crosotus. Am. Jour. Sci., XLIV, 1843. p. 340. 
Supplementary notice of Ceraurus crosotus. Am. Jour. Sci., 1843. 
Vol. XLV, p. 223. 
Casts of American fossils presented to tin- Phil. Acad. Nat. Sci. Vol. 
I, 1843, p. 1T4. 
Sulphate of lime or fibrous gypsum from Mammoth cave. Ky. Phil. 
Acad. Nat. Sci., Vol. I. p. 244, 1843. [For this the name oulophyllites 
is suggested.] 
Report of John Locke. M. I)., to David Dale Owen. M. 1).. principal 
agent to explore the mineral lands of the United States. Embraced in 
Dr. Owen's report of work done in 1839, in Iowa, Wisconsin and Illinois. 
Senate Ex. Docs., No. 407. 28th Congress, 1st Sess., 1S44. [This report 
was first printed as a part of a special message from tin- president (dated 
June 4. 1840) in 1840, without the accompanying charts, sections, and 
other illustrations. Besides the edition ordered in 1844 by the Senate, 
1,500 copies, the House ordered for its own use. an edition of 5,000 
copies. Feb. 25, 1845.] 
Observations made in the years 1838, '3'.). "40. '41. '42. and '43. to de- 
termine the magnetical dip and the intensity of magnetical force in sev- 
eral parts of the United States. Trans. Am. Phil. Soc, Vol. IX. 283-315, 
April 15, 1844. 
Geology of Porter's island and Copper Harbor [Isle Royale], Trans. 
Am. Phil. Soc. IX. 311, 312 (pp. 305-315), with map-. 1S44. 
Geology and Magnetism. Trans. Am. Phil. Sue. April 19, 1S44. 
Observations on Terrestrial Magnetism. Smithsonian Contributions, 
111. Art I. pp. 1-29, 1851. 
. Trans. Am. Phil. Sue.. 1846, p. 212. 
Description of Asterias antiquata, from the Blue limestone of Ohio 
Proc. Phil. Acad. Sci., Vol. III. pp. 32-34 (with Qgure), 1846. 
[NOTE. — In this Locke corrects (he idea maintained by TroOSt and 
Fealherstonhaugh that this is the Carboniferous limestone.] 
Synoptical report on the geology of the northern peninsula of .Michi- 
gan, addressed to Dr. C. T. Jackson, Oct. 2."). 1847. Senate documents, 
1847, Isl Sess., 30th Congress, comprising pp. 183-199 of the report of the 
Commissioner of the General Land Office. 
Catalogue of specimens forwarded to Dr. Jackson by John Locke, 
Dec, 1847. In Dr. Jackson's reporl lor 1848, pp. 547-556. 
U. S. Geological Survey of public lands in Michigau — Field-notes. 
[Evidently these notes were taken bj some member of Dr. Locke's party 
in 1847.] Dr. Jackson's report for IS is, pp. 556-570. 
Reporl of Magnetic observations by Dr. John Locke, assistanl geolo- 
gist. In Jackson's report for 1848, pp. 572-589. 
