SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



Editorial Committkb : S. Nkwoomb, Mathematios ; E. S. Woodward, Meohanios ; E. C. Pickkeino 

 Astronomy ; T. C Mkndknhall, Phyaics ; R. H. THURSTON, Engineering ; Ira Rkmskn, Chemistry ; 

 Charles D. Walcott, Geology ; W. M. Davis, Physiography ; Hkney F. Osborn, Paleon- 

 tology ; W. K. Brooks, C. Hart Mberiam, Zoology ; S. H. Scddder, Entomology ; C. E. 

 Bessby, N. L. Bbitton, Botany ; C. S. Minot, Embryology, Histology ; H. P. 

 BowDiTCH, Physiology ; William H. Welch, Pathology ; 

 J. McKebn Cattell, Psychology. 



Fridat, July 24, 1903. 



coyTEyrs: 



The Twenty-eighth General Meeting of the 

 Ameriean Chemical Societt/: Dr. Austin' 

 JI. Patterson 07 



The Case for Vaeci nation: Dk. C.-E. A. Wixs- 

 LOW 101 



On Uses of a Draicing Board and Scales in 

 Trigonometry and yavigation: E. A. 

 Harris 108 



Scientific Books: — 



Colton's Zoology: Dr. Joh.\- H. Gerovld.. 112 



Discussion and Correspondence: — 



Meteorological Observations icith Kites at 

 Sea: Professor A. Lawrence Rotch 113 



Shorter Articles: — 



Crystals of Oxalate of Lime in Plants: Dr. 

 H. W". Wiley. The Seminar Method in 

 yattiral Sciences, especially in Zoology: K. 

 W. Gentiie 116 



Botanical Notes: — 



Studies of Water Molds; Protoplasmic 

 Streaming in Plants; Forestry in Nebraska : 

 Professor Charles E. Bessey 121 



Moderji Yieics on Matter 122 



Scientific Notes and News 124 



University and Educational Xcics 128 



MSS. Intended for pahlication and books, etc., intended 

 lor review sbould be sent to tbe responsible editor. Pro- 

 fessor J. McKesn Cattell, Garrisoo-on-Hudson, N. V. 



THE T^yEyTY-EIGBT^ GENERAL MEETING 

 OF THE AMERICAN CHEMICAL SOCIETY. 



The twenty-eighth genei-al meeting of 

 the Amei'ican Chemical Society was held 

 in Cleveland on June 29 and 30. At the 

 opening session, held in the rooms of 

 the Associated Technical Clubs, Professor 

 Edward AV. Morley gave a brief address 

 of welcome in behalf of the Cleveland 

 Chemical Society. 



In his reply the president, Pi'ofessor 

 John H. Long, paid a well-merited tribute 

 to the work of two Cleveland men. Pro- 

 fessors Jlorley and Mabery. 



In the afternoon following the first ses- 

 sion the members of the society were taken 

 on a most entertaining drive through one 

 of Cleveland's chief industrial centers, 

 where the iron furnaces, the works of 

 the Grasselli Chemical Company and the 

 Standard Oil Company, the ship yards and 

 many minor concerns could be seen to good 

 advantage. 



In the evening, the visitors were again 

 the guests of the local society at an in- 

 formal smoker at the rooms of the Univer- 

 sity Club. By invitation of the officers 

 of the society, Dr. Gomberg presented a 

 discussion of the subject of trivalent car- 

 bon. In a verj' lucid and interesting talk, 

 he outlined the way in which he was led 

 to the discovery of triphenylmethyl, and 

 the series of proofs by which its structure 



