iv Contents. 



RAGE 

 CLUSTERS AND NEBULA. — DOUBLE STABS. — OCCULTATIONS. By the Rev. 



T.W.Webb, A.M., F.R.A.S 207 



Precious Stones 216 



Comets : an Account of all the Comets whose Orbits hate not 



been Calculated. By G-. F. Chambers 224 



Fishes Observed at Nice, 1865. — Thr Chtm^ea and the Alepoce- 



phalus. By Richard Deakin, M.D. With a Coloured Plate 241 



The Winds. By A. S. Heeschel, B.A 246 



A Brief History of a Marine Tank. By Shirley Hibberd 259 



Pleasant Wats in Science.— No. I.— Curiosities of Motion 266 



Chain Suspension Roofs. By Sir John Heeschel, Bart., X.H., etc , 



etc. With a Facsimile of the Original Sketch 275 



On the Size of Telescopic Star Disks. By the Rev. W. R. Dawes... 276 

 Results of Meteorological Observations made at the Kew Observa- 

 tory. By G. M. Whipple 278 



Opinions on Epidemics and Epizootics 284 



The Lunar Mare Serenitatis. — Double Stars. — Occultations. By 



the Rev. T. W. Webb, A.M., F.RA.S 292 



The Spectroscope and the Microscope. With an Illustration 301 



Comets : an Account of all the Comets whose Orbits have not 



been Calculated. By G-. F. Chambeks 305 



Shield-Bearing Crustacea (Recent and Fossil). By Henry Wood- 

 ward, F.G.S.,F.Z.S. With a Coloured Plate 321 



Cyclones. By A. S. Herschee, BA 329 



Pleasant Ways in Science. — No. II. — Equilibrium and Repose. 



With a Diagram 342 



On the Spectra of Pigments. By Henry J. Slack, F.G-.S 348 



The Flint Tools of North Devon. By Townshend M. Hall, F.G-.S. 



With Two Plates 350 



New Experiments with Soap Bubbles. By John Broughton, B.SC 



With Three Illustrations 358 



Mr. Highlet's Condenser. With Two Illustrations 368 



M. Chacornac on the Moon.— Occultations. By the Rev. T. W. 



Webb, A.M., F.R AS 370 



Aids to Microscopic Inquiry. — No. VIII. — Honey 376 



Heart Movements Graphically Displayed. By M. Marc r 378 



Comets : an Account of all the Comets whose Orbits have not been 



Calculated. By G. F. Chambers 379 



Golden Netted-leaved Orchids. By Shirley Hibberd. With a 



Coloured Plate 401 



On Mud Volcanoes and Salt Lakes in the Crimea. By Professor D. 



T. Ansted, M.A., F.RS 409 



A Clepsydua for Driving Telescopes. By Frederick Bird 421 



On the Welwitschia Mirabilis, Hook., Fil. By John R. Jackson. 



With a Tinted Plate 424 



A New Species of Cicada from the Cascade Mountains. Bv J. K. 



Lord, F.Z.S * 428 



Our Future Coal Fields. By John Jones, F.G.S 435 



Hot Springs and other Natural Features of the Pyrenees. By A. 



S. Herschel, BA 439 



A Substitute foe the Position Micrometer. By Charles Grover. 447 



Solar Physics 450 



Opposition of Ceres— Occultation. By the Rev. T. W. Webb, A.M., 



F.R.A.S 454 



Pleasant Ways in Science.— No. III. — Identity and Change 461 



Opaque Illuminators for High Powers 467 



Literary Notices.— Browne's "Ice Caves of France and Switzerland," 



58; Tyudall " On Radiation," 59 ; Brande'a "Dictionary of Science, 



Literature, and Art, 59, lt-8, 389 ; Ritrer's " Comparative Geography," 



60; "Anthropological Review," 60; " Enterprise and Adventure," 61 ; 



Mona Bellair's " Hurdy Ferns," 61; Hoteutt'g "Handbook of British 



