Vol. 65 : Part I. 



« 



MEMOIRS AND PROCEEDINGS 



OF 



THE MANCHESTER 



LITERARY & PHILOSOPHICAL 



SOCIETY, 1920-21. 



CONTB 



Memoirs: fa 



I. — Notes on a Collection of Hepalics from the Camerooiis, 

 West Coast of Africa. By Wi\iam H. Pearson, M.Sc, 

 A.L.S. With £ Plates \ & •<*, 



(Issued separately March Bii^ffi&b.k * } ^ ti^.®^^ 



"'■■"--■■ 



II. — The Polytropic Curve and Its Relation to Thermodynamic 

 Efficiency. (With Note on the Uniflow Engine.) By 

 W. J. Walker, Ph.D., B.Sc, A.M. Inst. C.E. With 



7 Text-Jigs pp. 1 — 11 



(Issued separately June 28th, 1931.) 



III. — The Work and Discoveries of Joule. By Sir Dugald Clerk, 



K.B.E., D.Sc, LL.D., F.R.S pp. 1—20 



The First Joule Memorial Lecture, delivered December lhth, 1920. 

 (Issued separately May 12th, 1921.) 



IV. — Studies in Capillarity, I. Some General Considerations 

 and a Discussion of Methods for the Measurement of 

 Interfacial Tensions. By Allan Ferguson, M.A., D.Sc. 

 With 1 Text-fig. ... ... pp. 1 — 16 



Joint Meeting with The Faraday Society. 

 (Issued t-yarately May 17th, 1921.) 



V. — Studies in Capillarity, II. On a Modification of the 

 Capillary Tube Met! od for the Measurement of Surface 

 Tensions. By Allan Ferguson, M.A., D.Sc, and P. E. 

 Dowson, M.A. With 1 Text-fig pp. 1—8 



Joint Meeting with The Faraday Society. 

 (Issued separately May 17th, 1921.) 



VI. — Some Chapters from the History of English Spelling 

 and the Need of a New Chapter. By Professor Miles 

 Walker, M.A., D.Sc pp. 1 — 16 



(Issued separately June 2kth, 1921.) 



VII.— Manx Mines and Megaliths. By W. H. Corkill. With 2 



Maps ... .... pp. 1—8 



(Issued separately June 30th, 1921.) 



MANCHESTER : 

 36, GEORGE STREET. 



Price Twelve Shillings. 



July 27th , 192 1. 



