XIV CONTENTS. 
MEASUREMENTs on the ultraviolet magnetic rotation in gases. 773. 
— on resistance of a pyrite at low temperatures down to the meltingpoint of 
hydrogen. 1384. 
mecca and Jidda (Determination of the geographical latitude and longitude of) exe- 
cuted in 19]0—’1l. Part I. 527. Part 11. 540. Part III. 556. 
MELTING of fats (On the phenomenon of double). 681. 
METABOLISM of Aspergillus niger (Action of hydrogenious boric acid, copper, manga- 
nese, zinc and rubidium on the). 753. 
— of the nitrogen in Aspergillus niger. 1047. 
— of the fosfor in Aspergillus niger. 1058. 
— (Potassium sulfur and magnesium in the) of Aspergillus niger. 1349. 
METALLIC vapours (A method for obtaining varrow absorption lines of ) for investigations 
in strong magnetic fields. 1129. | 
METALS (The magneto-optic KeErr-eflect in ferro-magnetic compound and). ILI. 138. 
— (On the occurrence of) in the liver. 850. 
Meteorology. C. Braak: “The correlation between atmospheric pressure and rainfall 
in the East-{ndian Archipelago in connection with the 3,5 yearly barometric- 
period’. 454. 
— J. P. van DER STOK: “On the interdiurnal change of the air-temperature”’. 1037. 
— C. Braak: “A long range weather forecast for the East monsoon in Java”. 1063. 
METHYLENEBLUE (Penetration of) into living cells after desiccation. 1086. 
METRIC PROPERTIES (On) of biquadratie twisted curves. 910. 
MEIJER (0. £.) The coefficient of diffusion for gases according to. 1152. 
Microbiology. H. J. Waterman: “Mutation of Penicillium glaucum and Aspergillus 
niger under the action of known factors”. 124. 
— H. J. WATERMAN: “Action of bydrogenious boric acid, copper, manganese, zinc 
and rubidium on the metabolism of Aspergillus niger’. 753. : 
— M. W. Bevertnck: “On the composition of tyrosinase from two enzymes”. 932. 
— H. J. Warerman: “Metabolism of the nitrogen in Aspergillus niger”. 1047. 
— M. W. Bewerinck: ‘Penetration of methyleneblue into living cells after 
desiccation”. 1086. 
— N. L. SÖHNGEN: “Oxydation of petroleum, paraffin, paraffinoil and benzene by 
microbes”. 1145. 
— H. J. Warerman: “Potassium sulfur and magnesium in the metabolism of 
Aspergillus niger”. 1349. 
MICRO-ORGANISM (On a) grown in two cases of uncomplicated Malignant Granuloma. 765. 
MICRO-ORGANISMS (On the reaction velocity of). 629. 
MIEREMET (Ww. G.) and Ernestine pe NEGRI. On a micro-organism grown in 
two cases of uncomplicated Malignant Granuloma. 765. 
MILIKAN (J.) and F. A. H. SCHREINEMAKERS. On a few oxyhaloids. 52. 
MILKCURDLING (The antagonism between nitrates and calciumsalts in) by rennet. 434. 
MISCIBILITY of liquids (Experimental investigations concerning the) at pressures to 
3000 atmospheres. 1021. 
Mixtures (Accidental deviations of density in). 54, 
