weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 103 
Rogers (Austin F.), Beede (J. W.) jind. 
1. Coal Measure faunal studies, III. Lower Coal Measures. 
See Beede (J. W.) and Rogers (Austin F. ), I. 
Rolfe (Charles W.). 
1. The geology of Illinois as related to its water supply. 
111. Univ., Chemical Survey of the waters of Illinois, pp. 41-56, 2 pis. (geol. 
maps), 1903. 
Gives an outline of the general geology and the geological history of Illinois. 
Rose (Robert Selden). 
1. The geology of some of the lands in the Upper Peninsula [Michigan]. 
Mg. World, vol. 21, pp. 205-207, 1904; Eng. & Mg. Jour., vol. 78, pp. 343-344, 
1904. 
Describes the general geology and the occurrence and character of the iron-ore 
deposits. 
Rowe (J. P.). 
1. Nodular barite and selenite crystals of Montana. 
Am. Geol., vol. 33, pp. 198-199, 1904. 
Describes occurrence and composition of selenite crystals and nodular barite 
in Montana. 
2. Pseudomorphs and crystal cavities. 
Am. Jour. Sci., 4th ser., vol. 18, p. 80, 1 fig., 1904. 
Describes material from Shoshone, Idaho. 
Rowley (R. R.). 
1. The echinodermata of the Missouri Silurian and a new brachiopod. 
Am. Geol., vol. 34, pp. 269-282, 1 pi., 1904. 
Ruedemann (Rudolf). 
1. Graptolites of New York. Part 1. Graptolites of the lower beds. 
N. Y. State Mus., Mem. 7, pp. 455-803, 17 pis. and 105 figs., 1904. 
Gives a review of investigations upon the graptolites, discusses their structure, 
morphology, classification, phyllogeny, ran2;e and distribution, and gives 
systematic descriptions of the graptolites from the upper Cambrian and lower 
Ordovician of New York. 
Ruhl (Otto). 
1. The King-Ritter fault, 
Drury Coll., Bradley Field Geol. Station, Bull., vol. 1, pp. 33-36, 1904. 
Describes occurrence and character of faulting along the northern slope of the 
Ozark uplift in southwestern Missouri. 
2. Observations at Pegmatite Hill [Camden County, Missouri]. 
Drury Coll., Bradley Field Geol. Station, Bull., vol. 1, pp. 36-40, 1904. 
Describes the geologic structure at this locality. 
Russell (Israel C). 
1. Criteria relating to massive-solid volcanic eruptions. 
Am. Jour. Sci., 4th ser., vol. 17, pp. 253-268, 3 figs., 1904. 
Describes massive-solid volcanic eruptions and discusses the character of the 
evidence necessary to determine that volcanic masses have been extruded 
in a solid state. 
