NATURALI 
A MONTHLY JOURNAL 
DEVOTED TO THE NATURAL SCIENCES 
IN THEIR WIDEST SENSE. 
5 Hira EDITORS: 
* Prors. E. D. COPE awn J. S. KINGSLEY. 
ASSOCIATE EDITORS: 
‘Dr. C. O. WHITMAN, Dr. C. E. BESSEY, THOMAS WILSON, 
Prov. C. M. WEED, Pror. W. S. BAYLEY, Pror. E. A. AN DREWS. 
Vol. XXVI. NOVEMBER, 1892. 
CONA ENTS. 
PAGE. 
HEREDITY OF ACQUIRED CHARACTERS. manent and Temporary oat ee sé oak 
Manly Miles. 887 toed Horses. Tepas- oL Pe 
Uses or BACTERIA, (To be continued.) im Se 
H. W. Conn. 901 he Kaise thige 
CERTAIN SHELL HEAPS OF THE ST. Jonn’s RIVER, Font aiserstu — 
FLORIDA, HITHERTO UNEXPLORED.  (Lllus- | fw, z ike 
trated.) (First Paper. we 
Clarence Bloomfield Moore. 912 mcg nde Campio 
GEOMETRICAL Pr fe THE aie a New Nickel-Iron Alloy—Crystall 
cT BetTw 
! rk Notes—New Instruments—} 
sisted) SPAA Ryder. 923 Not 
ee ess Sees of the Bota ithe Development of the cine of As 
pos -Man’s Powers of Obser- and Solidago PA rs and Tent Booka. 
e reduction in the Speer 1a Zoolo, Sraa on eos neshgag ae Work 
tes Geological Survey. - 9380 | on Pen See Fishes from Western Canada— 
- 982 | A New Speci y 
| es of Eutænia fi estem | 
Lir ~ Cecurre ‘ence ae Under rgrol rad ! sylvania — The Cervical Vertebrze of Monotrema' 4 
-Waters in Texas, etc.—Evolution in Science, | . Embryology.—Frog Emt Pineal A 
 palisopby and  An—Out lines of Lessons in Amblystoma—Polyspermy in Vertebrates. 
- Bota: ieee . 935 mology. . Insects — Distributi 
EN | Spiders—The Encyrtinæ. rections 
tE a. P Th tolory.—The Glacial Catas- Insects—Number of Insect Species. 
pa in Sa a The g= Ores of the Lake Microscopy. —Gulland’s Method of Fix 
icaragu affine Sections to the Slide— 
logy and Paleonto pig | Nematodes for Microtome Sections. 
ma Kansas—On the Per- SCIENTI 
PHILADELPHIA, U. S. A. 
Bit ‘DER_ & KELLY, 
