BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-19Q7. 97 
Hobbs, William Herbert. 
1176. The correlation of fracture systems and the evidences of planetary 
dislocations within the earth's crust. — Wisconsin Acad. Sri., Arts, and Letters. 
vol. 15, pt. L 1 !»<>r,. 
Discusses the directions of lines of fracture in various parts of the United States 
and their correspondence to the major features of the earth's surface, including details 
in a table of fracture systems. 
1177. Suggestions regarding a petrographic nomenclature, based on the 
quantitative classification. — Abstract :. Congress of Arts and Science, Universal 
Exposition, St. Louis, 1904, vol. 4. p. <i<>4. 1906. 
1178. On two new occurrences of the " Cortlandl series" of rocks within the 
State of Connecticut. — Festschrift Harry Rosenhusch, E. Schweizerbartsche 
Verlagsbuchhandlung, Stuttgart, 1906, i>i>. 25-48, 1 pi.. 3 figs. 
Calls attention to two occurrences of the " Cortlandl series" of igneous rocks in the 
Stad' of Connecticut, and gives petrographic descriptions of the rock types found in 
them. 
1179. America and seismological research. — Pop. Sci. Monthly, vol. 69, no. .'». 
pp. 226-228, September. 1906. 
1180. Correspondence relating to a study of an area of crystalline rocks in 
southwestern New England. — Science, new ser., vol. 24, pp. 655-658, November 
23, L906. 
1181. On some principles of seismic geology. — Beitrage zur Geophysik 
(Gerland), Bd. 7, Heft 2, pp. 219-292, 10 figs.. 1907. 
Includes a chapter on the seismic geography of the eastern United States and a list 
of the earthquake epicenters within the eastern United States. 
1182. Earthquakes, an introduction to seismic geology. New York. 1 >. 
Appleton and Company, 1907. :v.H\ pp.. 24 pis..' 112 figs. 
1183. [Seismological research). — Jour. Geology, vol. 15, do. 2. pp. 1X2-184, 
1907. 
1184. The recent advance in seismology. — Jour. Geology, vol. in, pp. 288- 
297, 396-409, 4 pis., 1 fig., 1907. 
1185. The iron ores of the Salisbury district of Connecticut. New York, 
and Massachusetts. — Econ. Geology, vol. 2, no. 2, pp. .153-181, 12 figs.. 1907. 
Descrihes the history of the mining operations, the geology of the district, the occur 
rence of the ores in the various mines, and their composition and origin. 
1186. Some topographic features formed at the time of earthquakes and 
the origin of mounds in the Gulf plain. — Am. Jour. Sci., 4th ser., vol. 2:1. pp. 
245-256, 5 figs., April. 1iM>7. 
Discusses the origin of small mounds and adduces evidence in favor of their forma- 
tion through seismic agencies. 
1187. Origin of ocean basins in the light of the new seismology. — Geol. Soc. 
America, Bull., vol. 18, pp. 233-250, 1 pi., 1907. 
1188. Nathaniel Southgate Shaler. — Wisconsin Acad. Sci.. Trans., vol. 15, 
pt. 2. pp. 924-927, 1 pi. (port.), 1907. 
1189. The Charleston earthquake of Augusl :tlst. 1886, in a new light — 
Geol. .Mag., dec. 5, vol. 4 X no. 5, pp. 197-202. 1 fig., 1907. 
1190. Origin of Hie ocean basins in the light of the new seismology. Ab 
stract: Science, new ser., vol. 25, p. 706, May 17. 1907. 
1191. Seismotectonic lines and lineaments — a rejoinder. Science, new ser.. 
vol. 2(1, pp. 2.",:; 255, 1 fig., August 23, 1907. 
1192. Earthquakes viewed in a new light. — Michigan Acad. Sci., 9th Rept., 
pp. 43-56, 2 figs.. 1907. 
66836— Bull. 372— 09 7 
