CONTENTS. XVII 



MIXTURES (The preparation of tlie) and the compressibility at small densities. 541. 

 — ([sothermals of) of the molecuhir compositions 0.104-7 and 0.1994 of oxygen, 

 and the comparison of them with those of pure carbon dioxide. 577. 

 MOLECULAR COMPOSITIONS (Isothermals of mixtures of the) 0.1047 and 0.1994 of 



oxygen, and the comparison of them with those of pure carbon dioxide. .577. 

 MOLECULAR MOTIONS (Some remarks on the reversibility of). 42. 

 MOLECULES (Can tlie presence of the) in solutions be proved by application of the 



. optical method of Tyndall. 7o5. 

 MOLL (j. w.) presents a paper of Pu. van Harreveld : "On the penetration into 



mercury of the roots of freely Hoating germinating seeds." 182. 

 M o N G E (On the dilferentiail equation of). 620. 



MOTION (Algebraic deduction of the decomposability of the continuous) about a lixed 

 point of S^ into those of two <S;/s. 832. 

 — (Facts leading to trace out the) and the origin of the underground water in 

 our sea-provinces. 738. 

 MOTIONS (On a decomposition of a continuous motion about a lixed point of S 

 into two continuous) about of S^'s. 716. Observation of Dr. E. Jahnke. 831. 

 MUCOUS MEMBRANE (The proccss of involution of the) of the uterus of Tarsius spec- 

 trum after parturition. 302. 



MUTATION of plants (Investigations of some Xanthine derivatives in connection with 

 the internal). 203. 



MYOCARD (On the development of the) in Teleosts. 218. 



NITRATION (The) of Benzene fluoride. 659. 



NORTH-HOLLAND (Deep boulder-clay beds of a latter glacial period in). 340. 

 ^NUMBERS (Plücker's) of a curve in S^. 501. 



OCIMENE (On). 700. 



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



OPTICAL method of TvNDALL (Can the presence of the molecules in solutions be proved 

 by application of tlie). 735. 



OR1ENTATIC-PHENOMENA (Hysteretic). 597. 



origin (Facts leading to trace out the motion and the) of the underground water 

 in our sea-provinces. 738. 



OSCULATING PLANE (On the position of the three points which a twisted curve has 

 in common with its). 622. 



u D E M A N s (c. A. J. A.). Exosporiua Lüricis Oud. — A new microscopic fungus 

 occurring on the Larch and very injurious to this tree. 498, 

 — and C. J. Koning. On a Sclerotinia hitherto unknown and injurious to the 

 cultivation of tobacco (Sclerotinia Nicotianae OuD. et Koning). 48. Postcript. 85. 



oxygen and carbon dioxide (Isother)nals of mixtures of). I. The calibration of mano- 

 meter and piezoraetertubes. 532. II. The preparation of the mixtures and the 

 compressibility at small densities. 541. III. The determination of isothermals 

 between 60 and 140 atmospheres, and between — 15° C. and -f- 60° C. 554. 



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