TV CUO NT!) BON TOS: 
BOLTZMANN’s entropy principle (On the deduction of the equation of state from). 240. 
— (On the deduction from) of the second virial coefficient for material particles (in 
the limit rigid spheres of central symmetry) which exert central forces upon each 
other and for rigid spheres of central symmetry containing an electric doublet 
at their centre. 256. 
Boric AcID (Action of hydrogenious), copper, manganese, zine and rubidium on the 
metabolism of Aspergillus niger. 753. 
Botany. ©. van WisseLincH: “On the demonstration of carotinoids in plants. Ist 
Communication. 511. 2nd Communication. 686. 3rd Communication. 693. 
— J. W. Morr and H. H. Janssontus: “The Linnean method of describing ana- 
tomical structures. Some remarks concerning the paper of Mrs. Dr. Marim C. 
Sropgs: “Petrefactions of the earliest European Angiosperms”. 620. 
— J. C. Schoute: “Dichotomy and lateral branching in the Pteropsida”. 710. 
— Miss T. Tammes: “Some correlation phenomena in hybrids”. 1004. 
— Jon. van BurKom: “On the connection between phyllotaxis and distribution 
of the rate of growth in the stem”. 1015. 
— GC. van Wissetincu: “On karyokinesis in Eunotia major Rabenh.”. 1088, 
— Miss M. S. pe Vries: “The influence of temperature on phototropism in seed- 
lings of Avena sativa”. 1170. 
— C. van WissELINGH : “On intravital precipitates”. 1329. 
BRAAK (c.). The correlation between atmospheric pressure and rainfall in the Kast- 
Indian Archipelago, in connection with the 3,5 yearly barometric period. 454. 
— A long range weather forecast for the East monsoon in Java. 1063. 
BROUWER (H. A). On the formation of primary parallel structure in lujaurites. 734. 
— Leucite-rocks of the Ringgit (East Java) and their contact metamorphosis. 1238. 
BROUWER (L. B. J.). On looping coefficients. 113. 
— Continuous one-one transformations of surfaces in themselves, 5th Communi- 
cation. 352. 
— Some remarks on the coherence type 7. 1256. 
BUCHNER (Ee. H.). The radio-activity of rubidium and potassium compounds. IT, 22. 
BÜCHNER (e. H.) and L. K. Worrr. On the behaviour of gels towards liquids and 
their vapours. 1078. 
BURKOM (JOU. H. VAN). On the connection between phyllotaxis and the distri- 
bution of the rate of growth in the stem. 1015. 
CALCIUM-sALTS (The antagonism between nitrates and) in milkeurdling by rennet. 434, 
CALCULUs rationum. 2nd part. 6+. 
CARDINAAL (9) presents a paper of Prof. W. A. VersLUYS: “On a class of 
surfaces with algebraic asymptotic curves’. 1363. 
CAROTINOIDS (On the demonstration of) in plants. 1st Communication. 511. 2nd Com- 
munication. 686. 3rd Communication. 693. 
cELLS (Penetration of methylene-blue into living) after desiccation. 1086. 
Chemistry. J. W. 1e Hevux: “On some internal unsaturated ethers”. 19. 
— E‚ H. Bicuner: “The radio activity of rubidium and potassium compounds” 
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