IV OC: O-N: Te EASELS. 
Chemistry. C. A. Lopry pr Bruyn and A. Srecer: „On the influence of water on 
the velocity of the formation of ether.” 23. 71. 
— f1. W. Baknuis RoozEBoom: „An example of the conversion of mixed crystals 
into a compound.” 23. 74. 
— ¥rysv Conen and C. van Erk: „On the Enantiotropy of Tin” (communicated 
by Prof. H. W. Baxuurs RoozEpoom). 23. 77. IT. 81. 149. UI, 281. IV. 464. 
— H.W.Baxuuts RoozeBoom: Mixed erystals of mercuric iodide and bromide” 81.146. 
— Ernst Conen: On a new kind of Transition elements (sixth kind)” (communi- 
cated by Prof. H. W. Baknurs Roozepoom). 81. 153. 
— ©. A. Losry DE Bruyn and H. C. Bux: „On isodialdane”. 81. 143. 
— A. Smits: Investigations with the micromanometer” (communicated by Prof. 
V. A. Jurrus). 88. 
— U. W. Bakuuis Roozesoom presents the dissertation of Dr. H. J. Hisstnx: 
„On mixed crystals cf Sodiumnitrate with Potassiumnitrate and of Sodium 
nitrate with Silvernitrate ” 158. 
— H. W. Bakuuts Roozesoom: „The nature of inactive Carvoxime.” 160. 
— Tu. H. Benrens: „On isomorphous compounds of gold and mercury.” 163. 
— C. A. Losry pe Bruyn and W. ALBERDA VAN EKENSTEIN: „d-Sorbinose and 
l-sorbinose (W-tagatose) and their configurations.” 268. 
— J. J. Buaxxsma: „On the action of sodium mono- and -disulphides on aromatic- 
nitro-compounds” (communicated by Prof. C. A. LoBry DE Bruyy). 271. 
— Ernst Conen: “The alleged identity of red and yellow mercuric oxide” (commu- 
nicated by Prof. H. W. Baxuvrs RoozeBoom). I. 273. IL, 407. 458. 
— Ernst Conen: „On the theory of the transition cell of the third kind” Part 1. 
(communicated by Prof TH. W. Bakuurs RoozEBooM). 534. 
— P. van Romburcu: /On the nitration of dimethylaniline dissolved in concentrated 
sulphuric acid” (communicated by Prof. A. P. N. FRANCHIMONT). 342. 
— P. van Rompurcu: „On the formation of indigo from Indigoferas and from 
Marsdenia tinctoria” (communicated by Prof. A. P. N. FRANCHIMONT). 344. 
— A. P.N. Francurmonr presents the dissertation of Dr. P. J. MONTAGNE: 
The action of bydrogen-nitrate upon the three isomeric chloro-benzoic acids and 
some of their derivatives.” 497. 461. 
_. A. Smits: /Determination of the decrease in the vapourtension of solutions by 
means of determination of the increase in the boiling-point” {communicated 
by Prof. H. W. Baxuvrs RoozeBoom). 407. 469. 
— A. BP. Hontrman: The formation of trisubstituted derivatives from disubstituted 
derivatives of Benzene” (communicated by Prof. C, A. LoBry DE BRUYN). 468. 478. 
— ©. van Erk: »Formation and transformation of the double sait of Silvernitrate 
and Thalliumnitrate.” 468. 480. 
— J. J. HazewiNkeL: vIndiean- its hydrolysis and the enzyme causing the same” 
(communicated by Prof. S. HooGEWERFF). 512. 
— 8. Hoocewerrr and H. ter Meurer: Contribution to the knowledge of 
Indican.” 520. 
__ Brxsr Conen: „Thermodynamics of Standard cells” (1st Part) (communicated 
by Prof. H. W. Bakuurs Roozesoom). 619. 
