weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 27 
Broadhead (Garland C.) — Continued. 
4. The saccharoidal sandstone. 
Am. Geol., vol. 34, pp. 105-110, 1904. 
Describes the occurrence and character of the saccharoidal sandstone in 
Missouri. 
Brock (R. W.). 
1. Original native gold in igneous rocks. 
Eng. & Mg. Jour., vol. 77, p. 511, 1904. 
Describes occurrences of native gold in igneous rocks of British Columbia. 
2. Poplar Creek and other camps of the Lardeau district [British 
Columbia]. 
Can. Mg. Inst., Jour., vol. 7. Advance separate, 27 pp., 10 figs., 1904. 
Gives a general account of the geology of the district and describes the occur- 
rence of gold-ore deposits. 
3. Platinum in British Columbia. 
Eng. & Mg. Jour., vol. 77, pp. 280-281, 1904. 
Describes the occurrence, character, and geological relations of ore deposits of 
British Columbia in which platinum occurs. 
Brock (R. W.), McConnell (R. G.) and. 
1. Report on the great landslide at Frank, Alberta. 
See McConnell (R. G.) and Brock (R. W.), 1. 
Broili (Ferdinand). 
1. Permische Stegocephalen und Reptilien aus Texas. 
Palseontographica, vol. 51, pp. 1-120, 13 pis., 5 figs., 1904. 
Gives systematic descriptions and discusses the relationships and classification 
of Stegocephala and reptiles from the Permian of Texas. 
2. Ueber Diacranodus texensis Cope (Didymodus? compressus Cope). 
N. Jahrb. f. Min., Beilage-Band 19, pp. 467-484, 2 pis., 1904. 
3. Pelycosaurierreste von Texas. 
Deutsch. geol. Ges., Zeitschr., Bd. 56, pp. 268 , 1 pi. and 1 fig., 1904. 
Describes remains of Pelycosaurians from the Permian of Texas. 
Brooks (Alfred H.). 
1. Placer mining in Alaska in 1903. 
U. S. Geol. Surv., Bull, no 225, pp. 43-59, 1904. 
Describes occurrence of gold and the mining developments. 
2. The investigation of Alaska's mineral wealth. 
Am. Inst. Mg. Engrs., Trans. (Lake Superior meeting, September, 1904), 20 
pp., 1 fig., 1904. 
Brown (Barnum). 
1. Stomach stones and food of plesiosaurs. 
Science, new ser., vol. 20, pp. 184-185, 1904. 
Gives observations upon the occurrence of ''stomach stones" in connection 
with the remains of plesiosaurs and their probable use by the animal. 
