SCIENCE 



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



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE 



Friday, January 31, 1908 



GO'NTE'NTS 



The American Association for the Adva/nce- 

 ment of Science: — 

 Section A — Mathematics and Astronor>}y : 

 Pkofessok G. a. Millee 161 



The American Mathematical Society: Pro- 

 fessor F. N. Cole 168 



The American Physiological Society: Pro- 

 fessor Lafayette B. Mendel 170 



William Smith Clark, his Place as a Scien- 

 tist and his Relation to the Development 

 of Scientific Agriculture : Professor D. P. 

 Penhallow 172 



Scientific Books: — 



Memoirs and Scientific Correspondence of 

 Sir George Stokes: E. W. B. Finley on 

 American Birds: Professor Francis H. 

 Herrick 180 



8 cieties and Academies: — 



Organization Meeting of Illinois State 

 Academy of Science: Dr. A. R. Crook. The 

 Geological Society of Washington: Dr. 

 Ralph Arnold. The Biological Society of 

 Washington: Dr. M. C. Marsh. The Am- 

 erican Chemical Society, New York Sec- 

 tion: Dr. C. M. Joyce 186 



Discussion and Correspondence: — 



Baptanodon not a " Toothless " Ichthyo- 

 saur: Dr. W. J. Holland. " Trotting and 

 Pacing, Dominant and Recessive": John 

 L. Hervey. Inheritance of Fluctuating 

 Variations: Professor R. P. Bigelow. 

 Aggregate Mutation of Gossypium: Dr. C. 

 A. White 191 



Special Articles: — 



The Chromosomes of CEnothera : Dr. R. 



R. Gates 193 



Current Notes on Meteorology and Climatol- 

 ogy .-— 

 Changes of Climate; Fog Densities; Rain 

 Gauges; Note: Professor R. DeC. Ward . 195 



The Iowa Laboratories of Animal Biology . . 195 



Scientific Notes and News 196 



University and Educational Ncus 200 



THE AMERICAN ASSOCIATION FOR THB 



ADVANCEMENT OF SCIENCE 



SECTION A— MATHEMATICS AND 



ASTRONOMY 



The joint sessions of Sections A and D 

 and the Chicago Section of the American 

 Mathematical Society constituted a most 

 inspiring and far-reaching feature of the 

 meetings of this section. A separate report 

 of these sessions will appear in Science. 

 The address of the retiring vice-president, 

 Professor Edward Kasner, of Columbia 

 University, was read before a joint meeting 

 of this section and the Chicago Section of 

 the American Mathematical Society. It 

 was entitled "Geometry and Mechanics," 

 and will appear in a later number of Sci- 

 ence. The following twenty-seven papers 

 were read at the separate meetings of Sec- 

 tion A. 



1. Observations with the Bruce Spectrograph: 

 Edwin B. Frost. 



2. Comments en the Zeiss Stereoeomparator and 

 the Spectrocomparator belonging to Yerkes Ob- 

 servatory: Edwin B. Frost. 



3. Photographic Phenomena of Comet d 1907 

 {Daniel) : E. E. Barnard. 



4. On a Great Bed of Nebulosity in Sagitto/i-ius, 

 photographed loith the Bruce Telescope of the 

 Yerkes Observatory: E. E. Barnard. 



5. Note on the Problem of Three Bodies: E. 0. 

 LovETT. 



6. The Light Curve of Delta Cephei: Joel Steb- 

 bins. 



7. An Application of the Selenium Cell to As- 

 tronomical Photometry: Joel Stebbins and F. 

 C. Brown. 



8. Observations and Explanation of the Phenom- 

 ena seen at the Disappearances of the Rings 

 of Saturn: E. E. Barnard. 



9. On the Tioenty-foot Horizontal Solar Spectro- 



