378 Sketch of Henry Carvill Lewis — Uphant. 
"On Strontiiinite and Associated Minerals in Mifflin Co." [Pa.] Proc. 
Acad. Nat. Sci., Pliila., 187G, pp. It, 11. This seems to have been Mr. 
Lewis' earliest scientific publication. 
In the "Proceedings of the Mineralogical and Geological Section of the 
Academy of Natural Sciences of Philadelphia, 1877-1879," contained in 
the volume of the year 1880, Mr. Lewis presented twenty-nine communica- 
tions of which the more extended are: 
"The Optical Characters of some Micas," pp. 244-251. 
"On Siderophyllite — a new Mineral," 254,5. 
"The Surface Geology of Philadelphia and Vicinity," 258-272. 
"On the Bryn Mawr Gravel," 277,8. 
"The Iron Ores and Lignite of the Montgomery Co. Valley," 282-291. 
"On a new Fucoidal Plant from the Trias," 298,4. 
"The Trenton Gravel and its Relation to the Antiquity of Mai.," 296-B09. 
"On Philadelphite (Sp. Nov.)," 313-328. 
The Proceedings of the Academy of Natural Sciences for the year 1882 
contain fifteen communications from Prof. Lewis, including : — 
"Pseudomorphs of Serpentine aft«r Dolomite," pp. 36-38. 
"On a new Ore of Antimony," 38-40. 
"An American Locality for Helvite," 100-102. 
"Some Enclosures in Muscovite," 311-315. 
In the volume for 1883 are eight communications, including: — 
"On a supposed Human Implement from the Gravel at Philadelphia," 
40-43. 
"Crystallized Serpentine from Delaware," 72 74. 
From the later volumes all of Prof. Lewis' papers are here noted: 
"A Phosphorescent Variety of Limestone." Proc. Acad. Nat. Sci., 1884, 
pp. 10-12. American Naturalist, vol. xvi, 1882, pp. 687,8. * 
"Volcanic Dust from Krakatoa." Proc. Acad. Nat. Sci.. 1884, pp. 185,6. 
"Erythrite, Genthite and Cuprite from near Philadelphia," id., 1885, pp. 
120-122. 
"Marginal Kames," id., 1885, pp. 157-173, with m-ip. This is the full 
text of a paper read before the British Association for the Advancement 
of Science, Montreal, Aug. 29th, 1884. 
Abstract in Geol. Mag., Ill, i, 1884, pp. 565,6. 
"Diamonds in Meteorites." Proc. Acad. Nat. Sci., 1888, pp. 81, 82. 
"The Great Ice Age in Penn.sylvania." Journal of the Franklin Institute, 
third series, vol. l.xxxv, 1883, pp. 287-307. 
"The Geology of Philadelphia," id., same vol., pp. 359-374 and 432-427. 
"The Antiquity and Origin of the Trenton Gravel." In Dr. C. C . Abbott's 
"Primitive Indu.stry," Salem, Mass., 1881, pp. 521, 551. 
"Note on the Zodiacal Light." Amer. Journ. of Sci.. third series, vol. 
XX, pp. 437-445, with plate; Dec. 1880. Proc. Amer. Assoc, Boston, vol. 
XXIX, 1880, pp. 241-243. 
"Supposed Glaciation in Pennsylvania south of the Terminal Moraine." 
Amer. .Tourn. Sci., third series, vol. xxviii, pp. 278-285, with map; Oct., 
1884. 
