TABLE OF CONTENTS. Vii 
FANNY R. M. HITCHCOCK, 
Notes on the Larve of Amblystoma (June 4, 1888)................. 255 
Further Notes on the Osteology of the Shad (Alosa sapidissima) 
(Mui OPA ISSS) Spero 1a sscusisici 21s ter ons eis 1a)/avetata'arore\ave + actaicial stensisie Darel oe 259 
J. B. HOLDER. 
Soaring of Birds (December 19, 1887).......... Uatove sete ils ste eléahee uaieae SO 
OLIVER P. HUBBARD, 
On the Sea Anemones of Swallow House or Cave in the Rocks at 
Nahant, near Lynn, Mass., by Rev. Manasseh Cutler .......... 244 
ALEXIS A. JULIEN. 
On the Geology at Great Barrington, Massachusetts (October 17, 
188 
Mes Otero sles in torn SES Sis eee ite sdsiels Dole wears hake 21 
JAMES F. KEMP. 
The Geology of Manhattan Island (November 14, 1887)............. 49 
GEORGE F. KUNZ. 
Minerals from Fort George, New York City (November 14, 1887) 
DOSER GCL herd kates wiaicloine otcitiecalare @erslotars ieroie or ons ealal Nel eiefoi cielssieltietoteravs to che 
Precious Stones; Ten Years’ Progress in their Study and Discovery 
(QWienny dk aistste)) Cea OUaE LON mek cag cneobcootoes anoucocoueouHOT 236 
ALICE D, LE PLONGEON. 
Eastern Yucatan; Its Scenery, People, and Ancient Cities and 
Monumients/(November, 7 1887) abstract... 6... 6... ene ass 45 
W. GOOLD LEVISON. 
On a Method for the Absolute Measurement of the Shutter-Speed in 
Instantaneous Photographic Exposures (January 16, 1888)...... 101 
DANIEL S. MARTIN. 
hes shieldrofeRrocks4 (OctoberdOmls8i)seerceetesaee oe ceeeiece: 17 
SETH E. MEEK. 
Notes on the Fishes of the Cayuga Lake Valley (April 16, 1888)..... 166 
F. J. H. MERRILL. 
Notes on the Age of the Limestones of Westchester Co., N. Y. (Oc- 
LoOMer eH OMTSSi)MUieOUl COSETOCES ah tells cniscte se nic ciclo see eels 16 
HENRY A, MO1T. 
The Velocity of Gravity (December 5, 1887) without abstract....... 71 
JOHN S. NEWBERRY. 
Western Colorado—Its Scenery, Geology, Resources, and Future 
(Octobersie 188%) withowt abstract . 2.052. cccc. cece cee eses cs: 
Marbles: Their Origin, Distribution, and Quality (November 21, 
LSSMMEUILOUTEAUSENO Clore cr onic onteeie oleiniere erein ose 6 Saxe 
Memorial of J. Carson BREVOORT (December 19, 1887)........ 78: 
