CONTENTS. Mil 



METHAK as carbon-food and source of energy for bacteria. 327. 



METHOD (A) for determining the osmotic pressure of very small quantities of liquid. 394. 



METHOD of VoiGT (A simple geometrical deduction of the relations existing between 



known and unknown quantities, mentioned in the) for determining the conduc- 



tibility of heat in crystals. 793. 

 METHODS and apparatus used in the Cryogenic Laboratory. VIL A modified Cryostat. 



77. VIII. Cryostat with liquid oxygen for temperatures below — 210° C. 79. IX. 



The purifying of gases by cooling combined with compression, especially the 



preparing of pure hydrogen. 83. 

 Microbiology. N. L. Söhngen : "Methan as carbon-food and source of energy for 



b;icteria". 327. 

 mixtures (On the possibility of predicting the properties of) from those of the com- 

 ponents. 743. 

 MIXTURES of normal substances (On the shape of the plaitpoint curves for). 2iifl com- 

 munication. 33. 

 M o L (d.). Ester anhydrides of dibasic acids. 336. 

 MOLECULAR RISE (The) of the lower critical temperature of a binary mixture of normal 



components. 144. 

 MOLL (J. w.) presents a paper of Dr. W. BuRCK : "On plants which in the natural 



state have the character of eversporting varieties in the sense of the mutation 



theory". 798. 

 MONOTREMES (On the sympathetic nervous system in). 91. 

 MUSKENs (L. J. J.), .\natomical research about cerebellar connections. 563. 

 MIJT.4.T10N THEORY (On plants which in the natural state have the character of ever- 



sportiuj; varieties in the sense of the). 798. 

 MYRCENE (On Oeimene and), a contribution to the knowledge of the aliphatic tevpenes. 



714. 

 NEBULAE (On the parallax of the). 691. 

 NERVOUS SYSTEM (Ou the sympathetic) in Monotremes. 91. 

 NITRATION (On the) of t)rtho- and metadibromobenzene. 678. 



— of symmetric nitrometaxylene. 70. 

 NITRO-COMPODNDS (The introduction of halogen atoms into the benzene core in the 



reduction of aromatic). 680. 

 NITROMETAXYLENE (Nitration of symmetric). 70. 

 N Y L A N D (a. a.). The prismatic camera. 505. 

 ociMENE (On) and Myrcene, a contribution to the knowledge of the aliphatic lerpenes. 



714. 

 OLIE JR. (j.) and H. \V. Bakhuis Roozeboom. The solubilities of the isomeric chromic 



chlorides. 66. 

 o N N E s (h. k a m e r l I n g h). V. Kamerlingh Onnes (H.). 

 ORBIT of the periodic comet Holmes (llesearohes on the) and on the perturbations 



of its elliptic motion. 642. 

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

 OR! HO- and metadibromobenzene (Ou the nitration of). 678. 



