Geology and Natural History. 181 



4. Maryland Geological Survey, St. Mary's County ; by 

 George Burbank Shattcck, Benjamin L. Miller and others. 

 Pp. 209, pi. xvi, figs. 12. Baltimore, March, 1907 (The Johns 

 Hopkins Press). — This volume, of the same form as the preceding, 

 is the fifth of the series of county reports. St. Mary's County is 

 the most southern county on the western shore of the Chesapeake, 

 lying south of Calvert County, and its geology is similar in many 

 respects to the latter. Both volumes contain full discussions of 

 the physiography, geology, economic resources, soils, climate, 

 hydrography, magnetic declination and forests. They are printed 

 and illustrated in the handsome style customary with the Mary- 

 land Survey. J. b. 



5. Geological Survey of India. — The first part of Volume 

 xxxv of the Records of the Geological Survey of India (Cal- 

 cutta, 1907) contains the report of the Director, Dr. T. H. 

 Holland, for the year 1906 and two other papers. The former is 

 a concise summary account of the results obtained by the Survey, 

 and brings out many facts of interest. We may note an abstract 

 of the work of L. Leigh Fremor on manganese- bearing rocks of 

 Vizagapatam. The typical rock of the series, consisting of potash- 

 feldspar, manganese-garnet, and apatite, having commonly a 

 granular, medium granitic structure or sometimes assuming a 

 pegmatitic form, is called kodurite after the Kodur manganese 

 mine. Types marked by quartz, pyroxene, and biotite are noted. 

 The name spessart-andradite (shortened to spandite) is suggested 

 for the typical manganese garnet. It is also shown that the 

 aluminous laterites, or bauxites of India, which occur on a large 

 scale, are likely to prove important as a source of aluminium. 



A brief statement is made in regard to the Dokachi meteoric 

 fall, which is described in. full in the same number by Mr. Fremor. 

 This fall took place on October 22d, 1903, and was accompanied 

 by some remarkable phenomena, the fire-ball being seen over most 

 of Bengal and Assam and beyond. Twenty-four fragments have 

 been collected by the Survey, ranging from 1,571 to - 73 grms. ; 

 these were obtained along a band running west by south from 

 Bibandi in the Dacca district to near the east bank of the Ganges 

 at Kolapara, a distance of six miles, the larger fragments having 

 fallen near the western end of the line towards which the meteor 

 was travelling when disruption occurred. The fragments are 

 nearly all covered with a crust, and on some of the faces of the 

 smaller fragments the formation of a younger crust shows the 

 fusion that occurred after disruption. Many more stones were 

 found in the various villages, the minimum number being estimated 

 at about 100. Several plates give reproductions of photographs 

 showing the aspects of prominent specimens. 



6. Brief Descriptions of some recently described New Min- 

 erafe.— Rutherfordine — or, better, rutherfordite (since Shepard's 

 name given in 1850 has now no standing in the literature) — is a 

 uranyl carbonate described by W. Marckwald from the Uruguru 

 Mts. in German East Africa, and named after Prof. Ernest 



