vi CONTENTS. 
NUMBER CXXXVI. 
‘ Page 
Art. XXIV.—The Wings of Pterodactyles ; (with Plate 
Bree Oy A meen 8 Oe ce 251 
XXV.—Sandstones having the grains in part Quartz Crys- 
ReeG OYA OURO a oe ee ee 257 
XXVI. —Notes on Amesiea Earthquakes, No. 11; by C. G. 
BOORG ag oa ok i edhe bea 257 
eee —Note on the hae ra gran Theory of lights 
ee OUR fe oh ere a eS 
XXVIII Sing, “ Timber Te CY thc AMNBIT, 2005... 55 215 
XXIX. ia ais seat for Calibrating Thermometers ; Wiss 
TOMA ie ile ee ee 
XXX. iN dks ‘of Fisher s Physics of the Earth’s Crust ; es 
C. UTTON, 288 
XXXTI. —Physiological Optics, No. IIL; by W. L. Srevens, 290 
XXXII. Pad ee of Foyaite or Eleolite-syenite in North- 
western New Jersey; by B. K. Emurson, ---- -------- 302 
XXXII. Sie of the remarkable Marine Fauna occupying 
the outer banks off the Southern Coast of New einer 
No. 51; by RIOR eo cS et 
XXXIV.—Determination of Phosphorus in pons as Jo kL. 
SMITH, hee 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics. Rg for ee rs action of Geysers, 320.— 
Electrical resistance of Gases, E, Ep Dielectric polarization in Electro- 
lytes: Change of phase due vay extension and contraction of metallic 
wires, 321.—-Phosphorescence, ABNEY iscussion of the re each 
theory of the conduction of heat: Spectroscopic observations with monochro- 
matic light, M. ZeENGER, 322.—Crystals of Potassium Chloride ee 9 in the 
extr: i EN, 
Geology and Mineralogy.—Tides in early Geological _ ee eat as ee 
the History of the Vertebrata for the Lower Eocene of Wyom nd 
exico, made during 1881, E. i a? E, 324.—Re Sort’ of ithe State Geologist of 
New Jersey, Jook: Diop a eek Arizona, R. C. Hints: Analysis of @ 
variety of Siderite, E. ae “325, 
Botany and Zoology—The Names of Herbes, W. Turner: A Synopsis of the 
North American Lichens, E. Tuckerman, se 6.—Botanische Mikrochemie, V.A. 
E to) 
Cc 
I 
C 
tronoy 
s 
Coelenterates, 328.—Ueber das Zusammenleben von Thieren und Algen, 329.— 
Botanical Necrology: Thomas Potts Ja ag — 330,— History and Present 
Condition ee the Fishing Industries, 8. F. B 334. 
Astronomy.—Micrometrical — of ie Double Stars, 1879-80: Names 
of age Planets, 334.—Photograph of the Spectrum of the Great Nebula in 
SOB Ns, 335.—Linear caactanies Algebra, B. PEIRCE, 336. 
Misellancou Scien Intelligence.—V oyage of the Vega round Asia an nd Europe, 
with a cal review of previous journeys along the North Coast of the 
Old World, re K. NonDenskiun Guides for Science Teaching: Potassium 
permanganate, . DeLace ndex to the Reports of the Chief of 
Engineers and the officers of ita. Corps of Engineers, 836.— Earthquake of 
March 4, 1881, in Ischia: The Swiss Seis mological Commission, 337.— Glacier 
 seratches in the Catskills: A. Geikie, Director of the Geo eiol Survey of 
Great Britain, 338.— Obitwary.—Sir C. Wyville Thomson, 338. 
Remar em ae EY Wt ok 
