KONINKLIJKE AKADEMIE VAN AVETENSCllArrEN 

 TE AMSTERDAM. 



PROCEEDINGS OF ÏJIE MEETING 

 of Saturday October 29, 1904. 



(Tiaii^latetl IVoin : Verslag van do gewone vergadering der Wis- en Natuurkundige 

 Afdeeling van Zaterdag 29 Uctober lüOi-, Dl. XllI). 



COnsTTElsTTS. 



Jak dk Vuiej : "The cunyruence uf the conics situated un the cubic surfaces of a pencil", j). 2G-J. 

 A. F. HoLi.EMAX : "The nitration of disubstitnted benzenes", \>. 266. 

 A. P. N. FRAXCiiniOKT and H. Fkied.maxx: "On zz'-tetramethylpiperidinc", p. 27C. 

 1'. J. Montagne : "On intramolecular atomic rearrangements in benzjjinaconcs". fComnuinicated 

 by Prof. A. P. N. Fkaxciii.mont), p. 271. 



A. P. N. FiiANCHiMONT presents tlie dissertation of Dr. J. Moll van Ciiaraste : "Sulpho- 

 isobutyric acid and some of its derivatives", p. 27.5. 



W. A. Yekslvts : "The relation between the radius of curvature of a twisted curve in a 

 ])oint P of the curve and tlie radius of curvature in P of the section of its developable witli 

 its osculatin<5 plane in point P". (Communicated by Prof. P. H. Sciioite), p. 277. 



L. J. J. IMiSKEXS : "Degenerations in the central nervous system after removal of tiie tloc- 

 culus cerebelli". (Communicated by Prof. C. Winicler), p. 282. 



H. KAMEi.LiNGii Onxes and C. Zaivrzewski : "The validity of the law of corresponding states 

 for mixtures of methyl chloride and cai-bon dioxide" (continued), p. 285. 



B. Meilink : "On the measurement of very low temperatures. VII. Comparison of the platinum 

 thermometer with the hydrogen thermometer", p. 290. — VIII. "Com})arison of the resistance 

 of gold wire with that of platinum wire". (Communicated by Prof. H. Kamerlixgii Onxes), 

 p. 300. ("With one platej. 



Jan de Vries : "A congruence of order two and class two foi-med by conics ", p. 311. 



W. EiNTiiovEN : "On a new method of damping oscilhitory deflections of a galvanometer", p. 31."). 

 (With one plate). 



"W. II. JvLius : "Dispersion bands in the spectra of o ( )rionis and Xova I'ersei", ]>. 323. 



J. Olie Jr.: "Tiie transformation of the i)henyipotassium sulphate into ;j-]ihenolsulplionato of 

 potassium". (Communicated by Prof. C. A. Ldiuiv ue Bimyn), p. 328. 



J. F. Si'YVEu: "The intramolecular transformation in the stereoi.sonieric z •• and ,5-trithioacet and 

 a- and ,5-trithiobenzaldehydes" (X". 11 and 12 on intramolecular rearrangements;, f Communicated 

 by Prof. C. A. Lobrv de Brivn), p. 329. 



J. "W. Diro: "The viscosity of the system liydrazinc and water". (^Communicated by Prof. 

 C. A. LoHRY UK Bri;yx;, p. 329. 



J. M. VAN Bem.melex : "On tlie composition of tlie silicates in the soil Avhicii have been 

 formed from the disintegration of the minerals in tiie rocks", p. 329. 



Erratum, p. 329. 



Tlie foliowiiii;' papers were read : 



18 

 Proceedings Royal Acad. Amsterdam, Vol. VII. 



