OOTOBBE 12, 1900.] 



SCIENCE. 



567 



Messrs. D. Appleton & Company include a new 

 edition of Herbert Spencer's ' First Principles ' 

 and 'Elementary Physics,' by C. Hanford Hen- 

 derson, Ph.D. 'Physical Experiments,' a labor- 

 atory manual, by John F. Woodhull, Ph.D., 

 and M. B. Van Arsdale. ' Animal Life,' a first 

 book of zoology, by David Starr Jordan, M.S., 

 M.D., Ph.D., LL.D., and Vernon L. Kellog, 

 M.S. ' The Elementary Principles of Chemis- 

 try,' by Abram Van Eps Young, Ph.B. 'An 

 Analytical Key to some of the Common Wild 

 and Cultivated Species of Flowering Plants,' 

 by John M. Coulter, A.M., Ph.D. 'A Text- 

 Book of Geology,' by Albert Perry Brigham, 

 A.M. ' Plant Studies,' an elementary botany, 

 by John M. Coulter, A.M., Ph.D. 



BOOKS RECEIVED. 



Street Pavements and Paving 3Iaterials. George W. 

 TiLLSON. New York, John Wiley & Sons. Lon- 

 don, Chapman & Hall, Limited. 1900. 8vo., 

 xii -I- 532 pp. ; 60 figures. $4.00. 



Die partiellen Differential-Gleichungen. Heinrich 

 Weber. Braunschweig, Friedr. Vieweg & Sobn. 

 1. Band. 4th ed. Pp. svii -f 506. M. 10. 



Untersuchungeti zur Blutgerinmmg. ERNST SCHWALBE. 

 Braunschweig, Friedr. Vieweg & Sohn. 1900. Pp. 

 vi + 89. M. 2.50. 



Verhandlungen der de^dschen Zoologischen Gesellschaft. 

 J. W. Spengel. Leipzig, Wilhelm Engelmanu. 

 1900. Pp. 170. M. 6. 



Chemie der Eiiveisakorper. Otto Cohnheim. Braun- 

 schweig, Friedr. Vieweg & Sohn. 1900. Pp. x 4- 

 315. 



Lehrbnch der Mechanilc. Alex. Wernicke. Braun- 

 schweig, Friedr. Vieweg & Sohn. 1900. Vol. I., 

 pp. XV -f 314. Vol. II., pp. xi -I- 373. 



Legons de chemie physique ; Relations entre les proprie- 

 ies et la composition. J. H. Van't Hoff. Paris, 

 A.Hermann. 1900. Part IIL Pp. ii -1-170. 



SCIENTIFIC JOURNALS AND ARTICLES. 



The American Naturalist for September opens 

 with an account of ' Unusual Modes of Breed- 

 ing and Development among Anura,' by Lilian 

 V. Sampson, to which is appended a valuable 

 bibliography of literature on the subject. ' The 

 Intestine of Amia calva ' is described by William 

 A. Hilton, most of the paper being devoted to 

 its microscopic structure. It would seem best 



not to use the term ' intestinal convolutions ' 

 where the folds of the lining only are meant 

 since the phrase is in general use among zoolo- 

 gists to denote the folds of the entire intestine. 

 Frank Russell presents some ' Studies in Cranial 

 Variation ' based on some two thousand skulls 

 of aboriginal Americans. Part XIII. of ' Syn- 

 opsis of North American Invertebrates,' by G. 

 H. Parker is devoted to the Achnaria. It is to 

 be presumed that this series when completed 

 will be published in book form on account of 

 its great value to the ' general zoologist ' as 

 well as the student. There are the customary 

 numerous reviews. 



The Plant World for September contains the 

 following articles : ' The Harts-tongue in New 

 York and Tennessee ' by William R. Maxon, 

 ' Some Local Common Names of Plants ' by C. 

 F. Saunders, ' The Twin-flower {Linneea bore- 

 alis) in Pennsylvania ' by Thos. C. Porter, 

 'Naturalized Compositte' by Frank Dobbin, an 

 exten.sive list of ' Plant Names of the Southwest- 

 ern United States ' by Myrtle Zuck Hough and 

 ' The Southwestern Limit of Juniperus Sahina ' 

 by E. J. Hill. In the supplement, under ' The 

 Families of Flowering Plants,' Charles Louis 

 Pollard treats of the orders Scitaminese and 

 Microspermas. 



The first article in Bird Lore for October is on 

 ' The Bower-birds of Australia ' by A. J. Camp- 

 bell, illustrated with some fine photographs 

 of the bowers of these interesting birds. Cap- 

 tain Gabriel Raynaud gives the second and con- 

 cluding part of his article on ' The Orientation 

 of Birds ' concluding that the power to return 

 over long distances is due to the sense of 

 direction located in the semi-circular canals. 

 Mrs. Henry W. Nelson tells, with illustrations 

 of 'A Pair of Killdeer ' and Thos. H. Mont- 

 gomery, Jr., describes 'The Bird Course at 

 the Marine Biological Laboratory, Woods Holl, 

 Mass., during the summer of 1900,' the main 

 aim of the course being to present suggestions 

 as to lines of work. In the section ' For Young 

 Observers ' Alick Wetmore gives an interesting 

 sketch entitled ' My Experience with a Red- 

 headed Woodpecker ' and in the ' Notes ' Caro- 

 line G. Soule relates an experiment tried by 

 her of attaching a painted paper flower, con- 



