Vol. 48: Part TIL 



MEMOIRS AND PROCEEDINGS 



OF 



THE MANCHESTER 

 LITERARY & PHILOSOPHICAL 



SOCIETY, 1903-1904. 



CONTENTS. 



Memoirs : 



XIII. Mean Tones, Equal Tempered Tones, and the Harmonic Tetra- 



chords of Claudius Ptolemy. By R. C. Phillips - - PP- 1—8. 



(Issued separately May 2nd, IQ04), 



XIV. The Constitution of the Ammonium Compounds. By J. C. Cain, 



D.Sc. pp. I— II- 



{Issued separately Mayjth, rqo4). 



XV. Notes on some Polyclad Turbellaria in the British Museum. By 



F. F. Laidlaw, B.A. - - - pp. i— 6. 



{Issued separately May gth, igo4). 



XVI. Note on the Union of Hydrogen with Sulphur, Selenium and 



Tellurium. By Francis Jones, M.Sc, F.R.S.E., F.C.S. - pp. i— 5- 



(Issued separately May gth, igo4). 



XVII. On the Electrolytic Methods for the Detection and Approximate 

 Estimation of Minute Quantities of Arsenic in Beer, Malt, and 

 Food Stuffs, &c. By William Thomson, F.R.S.E., F.I.C. 



Plates VII.— X. - - - - - ■ pp. I— 14. 



(Issued separately May 14th, 1904). 



XVIII. On the Discovery of Ekphas antiquus at Blackpool. By W. Boyd 



Dawkins, M.A., D.Sc, F.R.S. - - - - - - pp. i— 4- 



(Issued separately May 21st, IQ04). 



XIX. Tables of the Bessel Functions for Pure Imaginary Values of the 



Argument. By J. G. Isherwood, B.Sc. pp. 1—3. 



(Issued separately May sjth, IQ04), 



XX. Note on the Eye of the Mole. By F. A. Bruton, M.A. - - pp. 1—5. 



(Issued separately lune loth, igo4). 



XXI. A Diagnostic Key to the Genera of Recent Dibranchiate 



Cephalopoda. By William E. Hoyle, D.Sc. - - - - PP- i ■*o. 



(Issued separately Jzme lyth, igQ4). 



XXII. The Collection of Apparatus used by Dalton, now in the pos- 

 session of the Manchester Literary and Philosophical Society. 

 By Francis Jones, M.Sc, F.R.S.E., F.C.S. Plates L— IX. - pp. i— S- 



(Issued separately I tily ist, IQ04). 



XXIII. Notes on the Falkland Islands. By Rupert Vallentin. /'/a/ej^ /.—///. pp. 1—48. 



(Issued separately luly Sth, igo4). 



XXIV. On the Bearing of Mendelian Principles of Heredity on Current 



Theories of the Origin of Species. By A. D. Darbishire, B.A. pp. i — 19. 



(Issued separately luly iitk, igo4). 



XXV. The Hymns to Tammuz in the Manchester Museum, Owens 

 College. By Theophilus G. Pinches, LL.D., M.R.A.S. 



Plates I.— VII. - ...'■-: - pp. 1—32. 



(Issued separately luly 28th, igo4). 



Proceedings - - ..-.-. - . . - pp. xxi; — xxiv. 



Annual Report of the Council, with Obituary Notices of Professor 

 J. Willard Gibbs, the Rev. Dr. George Salmon, Professor C. A. von 

 Zittel, J. J. Ashworth, J. E. Cornish, Edward Coward, William 

 Goldthorpe, Thomas Harker, and T. R. Wilkinson - pp. xxv. — xxxviii. 



Treasurer's Accounts - - xxxix. — xli. 



List of the Council and Members of the Society ^.,-^:;l— — rr;?-*,^- xlii. — Ivii. 



List of the Awards of the Wilde and Dalton Medal 

 List of the Wilde Lectures ■'■"/' 

 Title Page and Contents for Volume. With Froi;^ 



nth, r,Sih._ rnriyi. 



MANCHESTER: 

 36, GEORGE STR^; 



iDrfcc tEeti Shilllnas. 



Iviii. 

 lix. 



