CONTENTS 

 OF THE SIXTY-SIXTH VOLUME. 



On^ the Laws of the Condeiisation and Dilatation of Air and 

 the Gases, and the Velocity of Sound. By J. Ivory, Esq. 

 M.A. F.R.S. Page 3 



Observations on the Notes of Birds, including an Inquiry whether 

 or not they are instinctive. By iVf/-. John Blackwall 14< 



Decas quarta novarum Plantarum Succulentarum ; Autore 

 A. H. Haworth, Soc. Linn.Lond. — Soc.Horticult. Lo7id. — 

 necnon Soc. Cces. Nat. Cur. Mosc. Socio, ^-c. Sj'c. ... 27 



On the Declination of the principal Fixed Stars, as observed at 

 Greenwich in the Year 1822. By Professor Bessel 33 



On the Construction of the large Refracting Telescope just com- 

 pleted. By M. Fraunhofer 41 



071 the Manner of estimating the Difference of Longitude in 

 Time. By Dis-iota 48 



Defence ofMr.i. Herapath's Demonstration of the Binomial 

 Tlieorem. By A Correspondent 50 



On the Constitution cf the Atmosphere. By J. Ivory, Esq. M.A. 

 F.R.S. 81, 241 



Abstracts of a Series of Papers lately read before the Royal So- 

 ciety, 8fC. on the Magnetism developed by Rotation. By 

 Messrs. Barlow, Christie, Babbage, Herschel, and 

 Marsh 93 



On the Conditions of Possibility, Arbitrary Functions, and Com- 

 plete Solutions of Periodical Functional Equations. By John 

 Herapath, Esq 102 



On the Velocity of Sound. i3j/ Wm. Galbraith, jEsi?. . 109 



Thoughts on the Demonstrcition of certain FormuUt. By 

 T. S. Davies, ^sy 115 



Chemical Examination of some Antiquities found in the Vicinity 

 of Brool, on the Rhine. i?j/ Z)r. Rudolph Bran des . 121 



On Metallic Titanium. By Z)r. Walchner of Friburg, in the 

 Breisgau 124 



On Mr.¥i.ER\PATH^sDemonstration of the Binomial Theoreml26 



Experiments on Anthracite, Plumbago, Sfc. By X.ardner 

 Vanuxem 161 



Vol, G6, a 



