LIST OF PUBLICATIONS. 
STANDLEY, PAuL C. Studies of tropical 
American phanerogams—No. 1. 
: Contr. U. 8S. Nat. Herbd., 
iv, pt. 5, Jan. 30, 
1914, pp. 427-458, 
pls. 24-31, 
Includes revisions of the gen- 
era Sommera, Cobaea, and Wat- 
sonamra, and a description of a 
new genus, Nothophlebia, in the 
Rubiaceae. 
Two additions to the flora of 
Louisiana. 
Torreya, 14, No. 2, Feb., 
1914, pp. 21-24. 
245 
TIDESTROM, Ivar. Botrychium virgini- 
anum and its forms. 
Oontr. U. S. Nat. Herbd., 
16, pt. 13, Dec. 29, 
1913, pp. 299-3038, 
pl. 102. 
Sphenoclea zeylanica and Cape- 
ronia palustris in the southern 
United States. 
Contr. U. S. Nat. Herb., 
16, pt. 13, Dec. 29, 
1918, pp. 305-307, 
ple 103; 
GEOLOGY AND MINERALOGY. 
GILBERT, CHESTER G., and JOSEPH HE. 
Poaur. The Mount Lyell Copper 
District of Tasmania. 
Proc. U. 8S. Nat. Mus., 
45, No. 2005, July 
22, 19138, pp. 609- 
625, pls. 48-51, 1 fig. 
After reviewing the history 
and geology of this important 
copper district, the paper gives 
the results of a detailed metal- 
lographie study of the ores. 
The deposition is indicated to 
have occurred during a distinct 
mineralizing epoch marked by 
solutions progressively changing 
in composition and depositing a 
series of sulphide minerals in 
sequential and transitional 
stages. The article closes with 
a brief description of analogous 
deposits and a selected biblio- 
graphy. 
PocurE, JOSEPH BE. (See under Chester 
G. Gilbert.) 
Wuerry, Enear T. Variations in the 
compositions of minerals. 
WHerey, Epear T.—Continued. 
Journ. Washington 
Acad. Sci., 4, No. 5, 
Mar. 4, 1914, pp. 
111-114. 
A new definition for a mineral 
species is proposed which takes 
Into account variations in com- 
position due to adsorption and 
solid solution, and a new term, 
meta-colloid, is suggested for 
colloid minerals which have be- 
come crystalline, the reasons for 
these recommendations being 
discussed at length. Based 
largely on a study of Museum 
material. 
Mineral nomenclature. 
Science (n. 8.), 39, No. 
1007, Apr. 17, 1914, 
pp. 575-577. 
Discussion of a paper by 
A. F. Rogers, recommending the 
use of mineral species names as 
group names when isomorphism 
is recognized, and the use of 
chemical prefixes to designate 
the end members of isomor- 
phous series. Based largely on 
a study of Museum material. 
PALEONTOLOGY. 
Basser, R. 8. Notes on an unusually 
fine slab of fossil crinoids. 
Proc. U. 8. Nat. Mus., 
46, No. 2009, Nov. 
29, 19138, pp. 57-59, 
pls: J, 2; 
Discusses the discovery, exca- 
vation, and preparation for ex- 
hibition of a slab of Lower 
Devonian limestone 4 feet wide 
by 7 feet long, crowded with un- 
BASSLeR, R. S.—Continued. 
usually well preserved examples 
of the genus Scyphocrinus, with 
which are associated the com- 
mon bulb-like bodies known as 
Camarocrinus. The slab, in con- 
nection with other specimens, is 
the basis of a monograph upon 
the genus Scyphocrinus now in 
preparation by Mr. Frank 
Springer. 
