520 Recent Literature. [May, 
played in doing this reminds us of the great feast served to the 
King of Spain, in which all the dishes were made of sows’ ears, 
The translator has also not been entirely competent, for the lan- 
guage is sometimes involved, and un-English words are occasion- 
ally used. The book is, however, a valuable contribution to pop- 
ular scientific literature. 
JouRNAL OF THE PosraL Microscopricat Society.'—This new 
magazine originated in the desire of the members of the Postal 
Microscopical Society of the United Kingdom to utilize notes and 
drawings that were buried in note books. Its two hundred pages 
of clear type, illustrated with numerous plates, contain jottings 
upon subjects too numerous to mention, yet the following illus- 
trated articles may be cited as examples: Mr. Hammond on 
Tubifex rivulorum, “ the most abundant worm in Thames mud; 
the Rev. E. T. Stubbs on a supposed new species of Caligus, 
which the writer, however, does not name; Mr. Hammond on 
Stylaria paludosa on the larva of Tanypus maculatus ; and on the 
structure and economy of Daphnia; E. Lovett’s observations on 
the embryology of the Podophthalmata ; and W. Horner s bt 
on the structure and habits of spiders. Although portions 
the book exhibit the usual fault of microscopic work, viz., 
much of it is work done for the sake of the microscope rather 
than to supplement the writer's observations and studies in on 
department of natural science, yet it contains much that 1s 0 
value, especially to the zodlogist. ; 
CROSS ON ANDERSITE FROM CoLoRADO.?—The rock in quea 
is described by Dr. Whitman Cross as a compact, dark, alm i 
black rock, containing a few macroscopic glassy feldspars * 
dark-green grains. 
Microscopically it is made up of a ground mass atite 
minute plagioclase crystals, pyroxene microlites and man ps 
octahedrons cemented by a clear glass base, which somes” 
_ contains light brownish globulites; all holding crystals of ee 
oa pyroxene, magnetite and apatite. The pyroxene ! 
small crystals and irregular grains. 
ptical e Sga the pyroxene crystals led Dr. Cross a 
regard them as belonging to two divisions, a pleachroic OF j 
rhombic one and a triclinic one. The former was looked. eg 
as hypersthene and the latter as a triclinic representativ 
augite. ' ted 
treater 
er the 
composed of 
pyroxene and magnite were dissolved; the latter was Or veated 
rawn with a magnet. The pyroxene minerals were again © 
d Mice 
t Journal of the Postal Microscopical Society, a Miscellany of Natu Collins o 
scopical Science. Edited by ALFRED ALLEN. Vol. I. London, WY.» t- ae 
` * American Journal of Science, New Haven, 1883 (3), XXV, 139- 
