All CONTENTS. 



MALEic ACID (Ou tlie chloride? of) niid of fumaric acid and on some of their deri- 

 vatives. 387. 

 MAMMALIA (Boi,k's Centra in the cerebellum of the). 298. 

 MAN (On the development of the cerebellum in). 1st part. 1. 2nd part. 83. 



— (On the excretion of creatinin in). 363. 



MANOMETER (Improvement to the open mercury) of reduced height with transference 



of pressure by means of compressed gas. 75. 

 MARTIN (k.) presents a paper of Dr. H. G. Jonkeb: "Some observations on the 



geological structure and origin of the Hondsrug." 96. 



— presents a paper of Prof. EuG. Dubois: "The geographical and geological signi- 

 fication of the Hondsrug, and the examination of the erratics in the Northern 

 Diluvium of Holland." 427. 



— On brackish and fresh water deposits of the river Silat in Western-Borneo. 743. 

 Mathematics. Jan de Vries : "On pencils of algebraic surfaces." 29. 



— W. A. Versluys: "On the rank of the section of two algebraic surfaces." 52. 



— W. A. Versluys : "On the number of common tangents of a curve and a surface." 176. 



— .1. C. Kluyver: "A local probability problem." 341. 



— VV. Kapteyn: "A definite integral of Kummer." 350. 



— Z. P. Bouman: "An article on the knowledge of the tetrahedral complex." 35S. 



— II. i)E Vries: "Central projection in the space of Lobatschefsky." (1st part). 3S9. 



— D. J. KoRTEWEG : ' HuYGENs' sympathic clocks and related phenomena in 

 connection with the principal and the compound oscillations presenting them- 

 selves when two pendulums are suspended to a mechanism with one degree of 

 freedom." 436. 



— P. H. Schoote: "A tortuous surface of order six and of genus zero in space 

 Sj)^ of four dimensions." 489. 



— W. A.Versluys: "The Plücker equivalents of a cyclic point of a twisted curve." 498. 



— W. Kapteyn: "The quotient of two successive Bessel functions." I. 547. H. 640. 



— Jan de Vries : "A group of complexes of rays whose singular surface consists 

 of a scroll and a number of planes." 662. 



— P. H. SciiouTE : "A particular series of quadratic surfaces with eight common 

 points and eight common tangential planes." 754. 



— Jan de Vries: "Some properties of pencils of algebraic curves." 817. 

 MELTING POINT CURVES (On the course of) for compounds which are partially disso- 

 ciated in the liquid phase, the proportion of the products of dissociation being 

 arbitrary. 699. 



mercury (Determination of the Thomson-eflect in). 331. 

 METADIBBOMOBENZENE (On the nitration of ortho and). 678. 

 metal wire (On the motion of a) through a lump of ice. 653. 



Meteorology. C. Easton: "Oscillations of the solar activity and the climate". 2n(3 com- 

 munication. 155. 



— J. P. VAN DER Stok: "On frequency curves of meteorological elements". 314. 



— J. P. VAN DER Stok: "On frequency curves of barometric heights". 549. 



