Vol.. 56 : Part I. 



MEMOIRS AND PROCEEDINGS 



OF 



THE MANCHESTER 



LITERARY & PHILOSOPHICAL 



SOCIETY, 1911-1912. 



CONTENTS. 

 Presidential Address : 



Researches on Heredity in Plants. By Prof. F. E. Weiss, D.Sc, 



F.L.S. Within. - - - - - -. - - -pp. I -12. 



{Issued separately, April 22ni, IQ12.) 



Memoirs : 



I. Mersenne's Numbers. By H. J. Woodall, A.R.C.Sc. (Lond.) -pp. i— 5. 



(Issued separately, December I2tli, IQH.) 



II. On a Collection of Arachnida and Chilopoda, made by Mr. S. A. 

 Neave in Rhodesia, North of the Zambesi. By S. Hirst. 



With 2 Text-figs. - - - - - - - - - -pp-I -H- 



{Issued separately, Decetnl'er soik, iqji.) 



III. Intensive Study of the Scales of three Specimens of Salmo 



salar. By Philippa C Esdaile, M.Sc With i Ft., s Dia^s., 



4 Graphs, ajtd Tables - - _._.__ pp. 1—22. 



{Issued separately, Febiuaiy ibth, Jgi2.) 



IV. A Geometrical Treatment of Geodesic Torsion. By Lancelot V. 



Meadowcroft, B.A., M.Sc. With 4 Text-figs. - - - - pp. i— 13. 



(Issued separately, Marcli btli, 1Q12.) 



V. Observations upon the Improvement of the Physique of Man- 

 chester Grammar School Boys during the last 30 years. By 

 Alfred A. Mumford, M.D. ------- - pp. i— 19. 



{Issued separately, February 26th, igi2.) 



VI. The Synthesis of Hydrocarbons and their Stability at High 

 Temperatures and Pressures. By J. N. Pring, D.Sc, and 

 D. M. Fairlie, M.Sc With i Text-fig. pp. i— 9. 



{Issued separately, MarcJi Sth, jg/2.) 



VII. The Duration of Life of the Common and Lesser Shrew, w^ith 

 some notes on their Habits. By Lionel E. Adams, B.A. 

 IJ'ith / /'/. - - -pp. I— 10. 



{Issued separately, Februa>y 6tli, IQ12.) 



VIII. A Note on the Little Owl, Carine noctua (Scop.), and its Food. 



By T. A. Coward, F.Z.S. --------pp. i— 11. 



(Issiied separately, Jainta7y jrst, igi2.) 



Proceedings ------------ pp. i— viii. 



MANCHESTER: 

 36, GEORGE STREET. 



price jfive Sbdlings anD Sljpence. 



April sgth, igi2. 



