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THE 
AMERICAN 
NATURALIST 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
Ma ee EDITO 
Prors. E. D. COPE, Philadelphia, AND J. 
ASSOCIATE EDIT 
Dr. C- Er BESSEY, 
PROF. W.S BAYLEY. 
Dr. C, 0. ween Chicago, 
. KIN dhe, Tufts College, College Hill, Mass. 
fants 
HH, C Saree Philadelphia, : 
DREWS, i ate 
Pror. €. M. WEED, Durham, W H; ~ Waterville, Maine, 
PROF . H. HOBBS, Madison; Wis M. ROMAINE NEWBOLD, Pinata: 
Vol. XXIX. APRIL, 1895. No. 340 wen 
CONTEN IS: 
PAGE, 
ON THE PRESENCE OF FLUORINE AS A TEST FOR 
` THE FossiLizATION OF ANIMAL BONES. 
Thomas Wilson. 301 
EXPERIMENTAL EVOLUTION AMONGST ngs 
H. Bailey. 318 
‘OBSERVATIONS ON A SO-CALLED ETER MAN 
-sM Sedma. 326 
_ ON THE VALIDITY OF THE GENUS ES TANA, 
Chas. T. Simpson. 336 
_Epitor’s TABLE.—Moder n Spain Writers. 
—The Endowment of Original Research — 
Antarctic Exploration.—W00d’s Holl ; a Cor- 
7 ee The xasleselpies Academy an 
kes Peary. : 
ECENT LITER Jeeta Ha 
ger a s—The New Check-List of Plants— 
Bulletin of the U. 8. Fish Commission Vol. 
XII—Paleonto 
y of Missouri, | ~ 348 
RECENT BOOKS AND PAMPHLETS. . . . . . <. 353 Comparative Psycho Wane 
‘ Pee nd The Antiquity 
_ GENERAL gee =o | Man at Petit Anse (Avery’s Island), Low 
Geography and Travels. — Where i is the great- | —Net a a aoc of Arcel olap ee and 
-est torent Hu the World? - 356 | Geological Specimens na Trip 
Mineralogy—Symmetry of eghaling aaa 
Davyne—The inerals of the Emery Deposits 
of Te es and Cumengeite—The bt 
eron Soak: eT iN = of jie: 
-in the Secondary ._ 
| Avery’s Island ( Petit Aerie Feb. “Ist, ie > 
S Pe OF Screxrinc Societes. 
i Doe EWS. 
Ta 
Petrography—Some Basalts of Asia ince D 
The Igneous Rocks of the Eureka District— 
Notes from Minnesota—The Geology of Dart- 
moor, Pnglarid Misell keo Notes. er e 
Geology = Paleontology—Origin of the Cont 
nental Area of Australia—The Car ararte 
System of Brazil The Alinities of Agri 
rus—-The Mastodons ` ea ssia Geological | 
News, Paleozoic—Mesozoic. 
Botany— pee Fixation i in Age Rules 
fot: Citation. . 371 
—The Senses of Pikin Make Deep ; 
(illustrated. )——Destruction of — 
Entomology—Two o more new | 
aps! new Trombidian. (1 iustrated.) 
: 'ytotropism | 335 
sychology. Sabi d Morgan's Introduction t to 
logy. et SOP 
Mi aoip rerasan of amie, Ma: 
Ani 
SRE 
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