VI CONTENTS. 



ARTICLE PAGE 



XV. — On Polymorphina tubulosa. By Thomas Alcock, M.D. . . . 244 

 XVI. — Oil the Mean Weekly Temperature at Old Trafford, Man- 

 chestei', for the Seventeen Years 1850 to 1866. By G. V. 



Vernon, F.R.A.S., F.M.S 250 



XVII. — Notes on the Origin of several Mechanical Inventions, and 

 their subsequent Application to different purposes. Part 



III. By J. C. Dyer, Esq., V.P 253 



XVIII. — Further Remarks on the Plumules or Battledore Scales of 

 some of the Lepidoptera, with Illustrations by Mr. J. 



SiDEBOTHAM. By JoHN Watson, Esq 259 



XIX. — On the variable Star R Vulpecula. a = 2o^ 58"" 22"9^. 

 ^=+23°i7-2'. Ep. 1865-0. By George Knott, F.R. A. S. 



Communicated by Joseph Baxendell, F.E.A.S 270 



XX. — Observations of the Meteoric Shower of November 13-14, 



1866. By Joseph Baxendell, F.E.A.S 275 



XXI. — Observations of the New Variable Star, T Coronse. By Joseph 



Baxendell, F.E..A.S 279 



XXII. — Notes on Varieties of Sarothamnus scoparius, Koch, and 

 Stachys betonica, Benth., from the Lizard, Cornwall. By 



Charles Bailey, Esq 284 



XXIII. — Notes on Wood-eating Coleoptera. By Joseph Sidebotham, 



Esq 288 



XXIV. — On a New Form of the Dynamic Method for Measuring the 

 Magnetic Dip, By Sir William Thomson, M.A., D.C.L., 



F.R.S., &c.. Honorary Member of the Society 291 



XXV. — Observations on the Alteration of the Freezing-point in Ther- 

 mometers. By Dr. J. P. Joule, F.R.S., V.P 292 



XXVI. — On the Microscopical Examination of Coal-Ash, or Dust from 

 the Flue of a Furnace, illustrated by the Microscope. By 



J. B. Dancer, F.E.A.S 293 



XXVII. — Notes on Cotton- Spinning Machinery. Roving-Frames. 



By J. C. Dyer, Esq., V.P 297 



