356 Scientific Intelligence. 



of a group of volcanoes at the east end of Java. Kemmerling 's 

 study of it was made in 1916 and 1917, and has been recently 

 published by the ' ' Koninklijke Natuurkundige Yereeniging" 

 in Batavia. The highland includes a great variety of volcanic 

 forms, of which the chief appears to be a hugh caldera, some 10 

 miles in diameter, with a simple rim on the north from 1,300 to 

 1,600 met. in altitude, but elsewhere buried by younger volca- 

 noes, up to 3,000 met. altitude, by manj^ small cones and by abun- 

 dant lava fields and mud flows. The highland is surrounded by 

 descending slopes, strongly incised by consequent valleys, 10 or 

 15 miles in length, which reach the sea on the north and east. 

 The report opens with a general description of the district, then 

 treats its structure, and finally its erosion. Supplementary 

 chapters are devoted to petrography by the author, and to analy- 

 ses of spring, lake and stream waters by Woudstra. It is a 

 valuable and comprehensive volume, highly creditable to Dutch 

 scientific enterprise in East Indian possessions. w. m. d. 



6. Set Gotivernement Celebes, Proeve eener Monographie 

 door L. VAN VuuREN. Encyclopaedisch-Bureau, Weltevreden 

 (Batavia), Java, Dec. 1, 1920 (Large 8vo, XXV -f- 535 pages. 

 51 plates, 99 figures, and an Atlas of 25 maps). — The author of 

 the comprehensive work, of which the first part has been com- 

 pleted, is the chief of the Encyclopedic Bureau by which it is 

 published. It appears to be an extended undertaking as the 

 large volume now issued is devoted to the coast and the off- 

 shore sea bottom, descriptions of which are gathered from many 

 sources and only in smaller measure from the author 's own obser- 

 vations. A great amount of information is thus brought together, 

 far more than can be found in any other single volume on 

 Celebes ; but it is of diverse treatment and unequal value, some 

 parts being purely empirical while others are gratifyingly 

 explanatory ; and it suffers by reason of being approached from 

 the sea, instead of from the land as it should be; for coastal 

 forms are only the marginal parts of other forms, and such mar- 

 ginal parts are best apprehended after the whole to which they 

 belong has been described. It is however possible that an 

 approach from the sea may be most advantageous in a region 

 where the land is imperfectly known; and in any case, readers 

 who are curious about this most remarkable East Indian island 

 will here find much instruction. w. m. d. 



7. Moseundersogelser i det Nordostlige Sjaelland. Med 

 Bemaerkninger om Trgeers og Buskes Indvandring og Vegeta- 

 tionens Historic; by Knud Jessen. [Bog-investigations in 

 North East Sjaelland, with remarks on the immigration of trees 

 and shrubs and the history of the vegetation] Danmarks geol. 

 Undersgelse. 2^"*: 1-269, 1920. — This importnat work contains a 

 summary of previous results in the study and interpretation of 



