teeks.] PALEONTOLOGY, PETEOLOGY, AND MINERALOGY, 1904. 45 
Dyar (W. W.). 
. The colossal bridges of Utah. A recent discovery of natural 
wonders. 
Century Mag., vol. 68, pp. 505-511, 1904. 
E. 
Oakle (ArthurS.). 
Mineral tables for the determination of minerals by their physical 
properties. 
New York, John Wiley & Sons, 73 pp., 1904. 
Phosphorescent sphalerite. 
Cal. Jour. Techn., vol. 3, pp. 30-31, 1904. 
Describes the occurrence and characters of a sphalerite from Mariposa County, 
California, and its property of phosphorescence. 
Sakle (A. S.) and Sharwood (W. J.) 
Luminescent zinc-blende. 
Eng. & Mg. Jour., vol. 77, p. 1000, 1904. 
Describes occurrence in Mariposa County, California, composition, and physical 
qualities. 
•Jastman (C. R.). 
On the nature of Edestus and related forms. 
Mark Anniversary Volume [Harvard University], New York, Henry Holt and 
Company, pp. 279-289, 1 pi., 1903. 
A critical discussion based upon new material lately discovered. 
On the dentition of Rhynchodus and other fossil tishes. 
Am. Nat., vol. 38, pp. 295-299, 2 figs., 1904. 
Includes a description of Rhynchodus pertenuis n. sp. 
A recent paleontological induction. 
Science, new ser., vol. 20,' pp. 465-466, 1904. 
Discusses the association of pebbles with the remains of plesiosaurs. 
On upper Devonian fish remains from Colorado. 
Am. Jour. Sci., 4th ser., vol. 18, pp. 253-260, 6 figs., 1904. 
Describes the occurrence and character of fish remains from Devonian strata 
in the San Juan region of Colorado, and gives a systematic description of a 
new form. 
Fossil plumage. 
Am. Nat., vol. 38, pp. 669-672, 1 fig., 1904. 
k Systematic paleontology of the Miocene deposits of Maryland: 
Pisces. 
Md. Geol. Surv., Miocene, pp. 71-93, 5 pis., 1904. 
aton (George F.). 
.. Characters of Pteranodon (second paper). 
Am. Jour. Sci., 4th ser., vol. 17, pp. 318-320, 2 pis., 1904. 
Obituary — John Bell Hatcher. 
Am. Jour. Sci., 4th ser., vol. 18, pp. 163-164, 1904. 
