( 517 ) 
33. Scmapr, F. — »Ueber eine neue grosze Leperditia aus lithauischen Ge- 
schieben’’. 
Verhandl. d. k. russ. Min, Ges. zu St. Petersburg, 2e Ser., Bd. XXXVII, 
Lief. 1, VI, p. 307—311; 1900. 
34.-Cumetewski, C. — »Die Leperditien der obersilurischen Geschiebe des 
Gouvernement Kowno und der Provinzen Ost- und 
Westpreussen’’. 
Schrift. d. phys.-oekon. Ges. zu Königsberg, Jg. 41, 1900, p. 1—38. 
35. Hotmsrrém, L. — »Otto Torell’, Minnesteckning. 
Geol. Fören. i Stockholm Förhandl., XXIII, H. 5; 1901. (Separat-Abdruck). 
36. Jonker, H. G. — »Bijdragen tot de kennis der sedimentaire zwerfsteenen 
in Nederland. 
LI, De Hondsrug in de provincie Groningen. 
1. Inleiding. Cambrische en ondersilurische zwerfsteenen’’. 
Acad. Proefschrift, Groningen, 1904. 
GRONINGEN, Min.-Geol. Instit., 31 December 1904. 
Chemistry. — “On some phenomena, which can occur in the case of 
partial miscibility of two liquids, one of them being anomalous, 
specially water.” By J. J. van Laar. (Communicated by Prof. 
H. A. LORENTZ). 
1. In the second part of his Continuitiit (1900) *) Prof. vax DER 
Waars has given the theory of the so called longitudinal plait on 
the y-surface, and in the last Chapter (§ 12, p. 175 sequ.) he gives 
moreover a special, ample discussion of this plait, in particular with 
regard to anomalous components. It is shown there, that for the 
appearance of certain complications, which can present themselves 
at this plait, one of the two components must be anomalous *). 
In the following pages I shall try to explain the appearance of the 
different particular forms, which can present themselves, when one 
of the components is associative, specially when this anomalous 
component is water. 
2. We begin to remember briefly the theory of the phenomenon 
of partial miscibility for binary mixtures of normal substances. 
It is well known, that the total thermodynamic potential is repre- 
sented by 
1) p. 41—45. 
2) Also compare These Proceedings of Nov. 5, 1902, 
