July 10, 1914] 



SCIENCE 



65 



over, we find in the volume in hand fuller 

 treatment of four aspects omitted in Ben- 

 ham's, namely the ecological, the physiological, 

 the experimental and the systematic, and these 

 are as adequately done as are the morpholog- 

 ical and embryological phases, indicative of 

 the breadth and catholicity of current German 

 biological scholarship. Under the head of 

 " Biologie," for example, we find a discussion 

 of such topics, among others, as locomotion, 

 nutrition, food-taking , commensalism, para- 

 sitism, hunger, excretion, sexual and asexual 

 reproduction, autotomy, regeneration in differ- 

 ent species, influence of external factors in 

 accelerating and inhibiting regeneration, 

 form regulation, heteromorphosis, duplication, 

 natural malformation, sensory reactions, foes 

 and parasites. Both triclads and rhabdocoels 

 are very fully treated. An abundance of 

 simple diagrams truly illustrate the test, and 

 a key to species, a glossary, and a bibliography 

 complete it. 



The work is exceptionally comprehensive in 

 scope, though brief, and well-proportioned, as 

 well as admirably conceived and worked out. 

 If any criticism is to be passed upon it one 

 might suggest that the illustrations are below 

 the standard to be expected in German books, 

 and that the experimental work of Morgan and 

 his school, and the mine of information in 

 Pearl's monographic treatise on the behavior 

 of Planaria have been wholly overlooked, in 

 fact, the sources as well as the " Tiere " appear 

 to have been " Einheimischer." 



The information pertaining to the Cephalo- 

 pod type has been much more accessible, thanks 

 to Brook's chapter in his "Invertebrate Zool- 

 ogy," to Bauer's admirable " Einf iihrung " 

 (1909) in the Naples " Mitteilungen " pre- 

 pared especially for the assistance of experi- 

 mentalists deficient in zoological training, to 

 Isgroves (1909) monograph on Eledone and 

 Williams {1909) on Loligo. Dr. Meyer's book- 

 let is supplementary to these in that it deals 

 with Sepia and Octopus, forms equally desir- 

 able as laboratory types. The work is very 

 largely anatomical, a departure from the gen- 

 eral scheme of the series, justifiable perhaps 

 in view of Bauer's paper and of the fact that 



the devil-fish is never seen in living condition 

 by the biological student outside of the seaside 

 laboratory with ample aquaria, for cephalo- 

 pods do not long withstand removal from the 

 normal habitat. One expects a fuUer morpho- 

 logical treatment of the kidney, the eye, the 

 hectocotylus, the ehromatophores and the phos- 

 phorescent organs, than he finds here, and in 

 fact the whole treatise might have been elabo- 

 rated in greater detail on both genera to the 

 advantage of the reader. The discussion is 

 direct, lucid and well-adapted to serve the 

 purpose of an elementary introduction to 

 cephalopod morphology. 



Charles A. Kofoid 

 Univeesity of California 



The Copper HandhooJc. By Walter Harvey 

 Weed. Published by the author; Houghton, 

 Michigan, 1914. Vol. XI., 1912-13. Pp. 

 1413. Price $5.00. 



The " Copper Handbook," well-known to 

 all those interested in copper mining, has 

 been taken over by Mr. W. H. Weed, who has 

 issued a new revised edition bearing the date 

 of 1914. Since its establishment by H. J. 

 Stevens in 1900 this useful compendium of 

 information about the copper mines of the 

 world has gone through ten previous editions.'' 

 The reliable information and fearless criticism 

 contained in it were greatly appreciated by 

 mining men. Since the unexpected death of 

 its founder in 1912 the work of preparing a 

 much needed new edition has been under- 

 taken by W. H. Weed, the well-known geolo- 

 gist and mining engineer, formerly connected 

 with the U. S. Geological Survey. Mr. Weed 

 has reduced the former unwieldy volume of 

 nearly 2,000 pages to about 1,400, largely by 

 the elimination of the introductory chapters 

 on mineralogy, geology, mining and metal- 

 lurgy, and by the segregation of the " dead " 

 companies. The copper mines of North 

 America are now described alphabetically in 

 a first chapter which is followed by a much 

 needed index by states and countries. The 

 third section describes the mines of South 

 America and other continents in alphabetic, 

 non-geographic arrangement. Much new 



