472 Scientific Intelligence. 



J. P. Moore has described two new leeches. 

 We understand that several other reports, on other groups, are 

 soon to be printed. a. e. v. 



3. Papers from the Alaska Harriman Expedition. — Several 

 useful and valuable reports on the collections obtained by the 

 Harriman expedition have already been printed by the Washing- 

 ton Academy of Sciences. 



The Report on the Nemerteans, by W. R. Coe (March, 1901, 

 84 pages, with cuts and 13 plates, 6 colored), is, perhaps, the most 

 important and complete of those hitherto published. It relates 

 to a group that is very richly developed on the Alaskan coast, 

 and which has hitherto been almost entirely neglected in those 

 waters. It includes 32 species, of which 28 are new. The col- 

 ored figures are excellent. a. e. v. 



4. Zoology : An Elementary Text Book ; by A. E. Shipley 

 and E. W. MacBrlde. London and NewYork, 1901 (The Mac- 

 millan Co.). 8vo, 632 pages, 347 cuts. — Although called "ele- 

 mentary " this is a rather complete text-book, suitable for the 

 more advanced students in colleges and universities, or for a ref- 

 erence book. The treatment of the subjects is clear and the 

 illustrations are generally excellent. The Vertebrata (or Chor- 

 data) occupy an unusually large part (nearly half, or 286 pages) 

 of the book, which will probably be considered an advantage by 

 many instructors. But it compels a severe cutting down of the 

 space for some of the important groups of In vertebrata. Thus the 

 great group of hexapod insects occupies only 23 pages, and the 

 Mollusca 39 pages. 



It is an excellent addition to the list of recent text-books and 

 manuals of zoology. a. e. v. 



5. An Elementary Course of Practical Zoology ; by T. 

 Jeffrey Parker and W. N. Parker. London and New York 

 (The Macmillan Co.). Small 8vo, 608 pages, 156 cuts. — This 

 is intended mainly as a laboratory guide for a course in "biology" 

 or comparative anatomy, such as is commonly given in many of 

 our colleges and scientific schools. For this purpose it seems to 

 be admirably adapted, being more up to date than most of the 

 similar works now in use. About one-third the book (215 pages) 

 is devoted to the study of the frog, in detail. The balance is 

 devoted to various other typical forms, such as the amoeba, hydra, 

 earthworm, crayfish, mussel, amphioxus, dogfish, rabbit. About 

 60 pages, at the end, are devoted to cell structure and embryology. 



a. e. v. 



IV. Miscellaneous Scientific Intelligence. 



1. National Academy of Sciences. — The following is a list of 

 the papers entered to be read before the National Academy at the 

 meeting in Philadelphia, held Nov. 12-14. 



George F. Becker: Note on linear force exerted by growing crystals. Note 

 ■on the orogenic theory of tilted blocks. 



