KONINKLIJKE AKAÜEMIE VAN WEïENSCllArPEN 

 TE AMSTERDAM. 



PIIOCKEDINOS OK TUK MEETJNG 

 of Saturday November 26, 1904. 



('rraiislalod Iruiu : Vcrslay van de gt.'woue vcrL!,adci'iiig dei' Wis- vu Nalimrkundige 

 Aldccliug van Zalerdag 2Ü November IDUi, Dl. Xlil). 



OOIsrTE:N"TS. 



Til. ZiKiiK.N: "(_)ii tlio (lrvc'lo|iiiieiit ut" tlie braiii in Tariius sptHanim'. (Cuiiiiiumicatccl by 

 l'ruf. A. A. W. IlniiiK.eirr), p. 3^1. 



P. II. SciiotTK: "On the equation determining the angles of two i)olytliinensiüiial spaces", p. 340. 



J. Cauuinaal : "The loens of the principal axes of a pencil of quadratic surfaces", ]>. 341. 



A. Sommkbfkld: "Simplified deduction of the field and the forces of an electron, movinj; in 

 any given way'. fCommunicated by Prof II. A. Lorektz), p. 346. 



0. Easton : "Oscillations of the sular activity and the climate". (Coninnmicatcd by Dr. C. II. 

 WiKDy, p. 368. (With one plate). 



W. Kaptkyn : "The values of some definite integrals connected witli Bks.ski. functiijns", p. 37.5. 



II. Kamkulingii Onnks and C. ZaivkzkwsivI : "The validity of the law of corresponding slates 

 for mixtures of methyl chloride and carbon dioxide" (Continued), p. 377. 



Corrigenda et addenda, p. 382. 



The following papers were read: 



Zoology. — ''(hi the (/('ri'/oj)///!'!// of the hniiii in Tdrsitis sin'ciriim." 

 Hv Piul'. Th. ZiKiiKN of l)crliji (( 'oiiiimiinealed i»y Prof. A. A. 



W. HiBHI'X'HT). 



(Commuuicaled in llie Meeting of September 21, I'.IOl). 



Owing lo the kindness of Prof. ilrnHKciiT sexen scries ofeinbrvofl 

 of Ttirsins speclruni were .-it niv (h'sposal, ninong them a sagittal 

 series. Willi regard lo the ccnlral iicrxons .system of the adnlt animal 

 1 refer lo two shoi'l papers |»iihlish(Ml l)v mvsolf, Anal. Anz. Hd. 22, 

 N". 24, p. r>Or) s('(|. and .Alon. )^v\w. f. Psychiatrie n. Nenrol. Pd. 14, 

 p. 54 se({. 



23 



Proceedings Royal Acad. Amsterdam. Vul. VII. 



