weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1894. 91 
551a Tarr (Ralph S.). The economic geology of the United States. 
MacMillan & Co., New York. 
Reviews : Jour, of Geol., vol. ii, pp. 226-231, by R. A. F. Penrose, jr. ; 
Am. Geol., vol. xiii, pp. 189-192. 
551& Physical geography of Texas. 
Abstract : Am. Nat., vol. xxviii, pp. 50-51 (J p.). 
Noticed in Bibliography and Index for 1892 and 1893. 
552 Taylor (F. B.). A reconnoissance of the abandoned shore lines of 
Green Bay [Michigan and Wisconsin]. 
Am. Geol., vol. xiii, pp. 310-327, with map. 
Describes the character and location of some of the abandoned shore 
lines of Green Bay. 
553 A reconnoissance of the abandoned shore lines of the south 
coast of Lake Superior. 
Am. Geol., vol. xiii, pp. 365-383, with map. 
Describes the occurrence of the various shore lines, with special 
reference to the highest shore line, and gives a summary of observa- 
tions and the author's conclusions. 
554 The limit of post-Glacial submergence in the highlands east 
of Georgian Bay [Ontario]. 
Am. Geol., vol. xiv, pp. 273-289, with map. 
Describes the glacial formations of the region and gives a summary 
and conclusions. 
555 The ancient strait at Mpissing [Ontario]. 
Geol. Soc. Am., Bull., vol. v, pp. 620-626, pi. 20. 
Abstract: Am. Geol., vol. xiii, pp. 220-221 (| p.). 
Describes the Nipissing and other higher level beaches and glacial 
phenomena of the region and gives the author's conclusions. 
555« Texas, Geological Survey. Fourth Annual Report, 1892. 
Abstract: Am. Jour. Sci., 3d ser., vol. xlvii, pp. 319-320 (i p.). 
55G Tight (W. G.). A glacial ice dam and a limit to the ice sheet in 
central Ohio. 
Am. Nat., vol. xxviii, pp. 488-493, pis. 13-15. 
Describes the glacial phenomena in the vicinity of the Licking Ki ver, 
in Licking County, Ohio. 
557 Contribution to the knowledge of the pre-Glacial drainage of 
Ohio. 
Denison Univ., Bull., vol. viii, pp. 35-62. 
Abstract : Am. Geol., vol. xiv, pp. 188-189. 
Describes the present drainage systems of the Licking, Muskingum, 
Hocking, Scioto, and Miami rivers in Ohio, and discusses the evidences 
of the character of the pre-Glacial drainage of the region. 
558 Tilton (J. E.). Origin of the present drainage system of Warren 
County [Iowa]. 
Iowa Acad. Sci., Proc, vol. i, pt. iv, pp. 31-33. 
Describes the drainage systems and concludes that they were marked 
out in pre-Glacial time. 
