Meeting of November 21, 1901. 149 



dormant a ces fonctions sous le signe f, soit toujours la premiere forme, 

 soit toujours la seconde. En ope'rant de la sorte on commet une erreur 

 sur chacune des integrates, mais ces erreurs se compensent complete- 

 ment dans la somme des inte'grales. 



Je me suis attache 1 ensuite a ecrire 1'inegalite qui exprime la condi- 

 tion de stabilite", et a re'duire aux integrates elliptiques les plus simples 

 toutes les inte'grales qui figurent dans cette inegalite'. 



November 21, 1901. 

 Sir WILLIAM HUGGINS, K.C.B., D.C.L., President, in the Chair. 



Mr. F. W. Dyson, Lieutenant-Colonel David Bruce, R.A.M.C. 

 (elected 1899), and Mr. A. Smith Woodward were admitted into the 

 Society. 



A List of the Presents received was laid on the table, and thanks 

 ordered for them. 



In pursuance of the Statutes, notice of the ensuing Anniversary 

 Meeting was given from the Chair. 



Major MacMahon, Dr. W. J. Russell, and Dr. A. D. Waller were by 

 ballot elected Auditors of the Treasurer's accounts on the part of the 

 Society. 



The following Papers, received during the Recess, and published in 

 full or in abstract, in accordance with the Standing Orders of Council, 

 were read in title : 



"The Anatomy and Development of the Stem in the Pteridophyta 

 and Gymnosperms." By EDWARD C. JEFFREY, Ph.D., Lecturer 

 in the University of Toronto. Communicated by D. H. SCOTT, 

 F.R.S. 



" A Memoir on Integral Functions." By E. W. BARNES, M.A., Fellow 

 of Trinity College, Cambridge. Communicated by Professor 

 A. R. FORSYTH, Sc.D., F.R.S. 



" On Areal Induction." By GEORGE J. BURCH, M.A., F.R.S. 



" Further Observations on Nova Persei. No. 4." By Sir NORMAN 

 LOCKYER, K.C.B., F.R.S. 



" An Attempt to ascertain the Date of the Original Construction of 

 Stonehenge from its Orientation." By Sir NORMAN LOCKYER, 

 K.C.B., F.R.S., and F. C. PENROSE, F.R.S. 



VOL. LXIX. M 



