CONTENTS. Vll 



JSr-amlber 263. 



Page 

 Art. XXVIII.— The Great Barrier Reef of Australia; by 



W. M. Dayis 339 



XXIX.— Wave Work as a Measure of Time: A Study of 



the Ontario Basin; by A. P. Coleman 351 



XXX. — Arthropods in Burmese Amber ; by T. D. A. 



COCKERELL 360 



XXXI. — A Calcium Carbonate Concretionary Growth in Cape 



Province ; by C. J. Maury 369 



XXXII. — On the Preparation and Hydrolysis of Esters 

 Derived from the Substituted Aliphatic Alcohols; by 

 W. A. Drushel and G. R. Bancroft 371 



XXXIII.— The Perchlorate Method for the Determination 



of the Alkali Metals; by F. A. Gooch and G. R. Blake 381 



XXXIV. — Protichnitesand Climactichnites; A Critical Study 



of Some Cambrian Trails; by L. D. Burling 387 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — A New Method for the Eecovery of Salts of Potas- 

 sium and Alumininm from Mineral Silicates, J. C. W. Frazer, W. W. 

 Holland and E. Miller, 398. — Electrochemical Equivalents, C. Hering 

 and F. H. Getman : A Laboratory Manual of General Chemistry, W, J. 

 Hale, 399. — A Short Manual of Analytical Chemistry, J. Muter: Allen's 

 Commercial Organic Analysis, W. A. Davis, 400. — The Ionizing Potential 

 of Sodium Vapor, E. W. Wood and S. Okano: Penetrating Power of 

 X-Rays from a Coolidge Tube, Rutherford, 401. — Problems in General 

 Physics, M. Masius, 404. 



Geology — A monograph of Japanese Ophiuroidea, arranged according to a 

 new classification, H, Matsumoto, 404. — Publications of the United States 

 Geological Survey, G. 0. Smith, 405. 



Miscellaneous Scientific Intelligence — Eleventh Annual Report of the Presi- 

 dent, H. S. Pritchett, and Treasurer, R. A. Franks, of the Carnegie 

 Foundation for the Advancement of Teaching, 407. — Publications of the 

 Carnegie Institution of Washington: Publications of the British Museum 

 of Natural History, 408. 



