August 19, 1904.] 



SCIENCE. 



227 



about one half of all the degrees are con- 

 ferred. There is this year a falling-oft' in 

 the relative number in the sciences, which 

 is, however, not large enough to be signifi- 

 cant. The larger institutions, in which 

 half or more than half of the degrees were 

 this year in the sciences, are Harvard, 

 Johns Hopkins, Cornell, Pennsylvania, 

 Clark and Michigan. 



TABLE m. 



DOCTORATES CONFERRED IN THE SCIENCES. 



The third table gives details in regard 

 to the separate sciences. There was an 

 unusually large number of degrees with 

 botany as the major subject. Otherwise 

 there is no notable change in the positions 

 of the subjects. The subjects in which 

 three or more degrees were conferred by a 

 university were: Chemistry — Yale, Penn- 

 sylvania, Columbia, Harvard and Johns 

 Hopkins; P%stcs— Chicago, Johns Hop- 

 kins and Clark; Zoology— Harvard, Chi- 

 cago and Johns Hopkins; Botany — Har- 



vard and Wisconsin; Mathematics — Tale; 

 Psychology — Clark. 



The names of those on whom the degree 

 was conferred in the natural and exact 

 sciences, with the subjects of their theses 

 are as follows: 



JOHNS HOPKIN.S UNIVERSITY. 



James Barnes : I., ' On the Analysis of Bright 

 Spectrum Lines ' ; II., ' On the Spectrum of Mag- 

 nesium.' 



Harry Preston Bassett : ' Determination of the 

 Relative Velocities of the Ions of Silver Nitrate 

 in Mixtures of the Alcohols and Water and on the 

 Conductivity of Such Mixtures.' 



Charles Edward Brooks : ' Orthic Curves ; or 

 Algebraic Curves which satisfy Laplace's Equation 

 in Two Dimensions.' 



Charles Geiger Carroll : ' A Study of the Con- 

 ductivity of Certain Electrolytes in Water, Methyl 

 and Ethyl Alcohols and Mixtures of these Sol- 

 vents; the Relation between Conductivity and 

 Viscosity.' 



Walter Buckingham Carver : ' On the Cayley- 

 Veronese Class of Configurations.' 



Howard Waters Doughty: ' Phenylsulphone- 

 orthoearbonic Acid and Related Compounds.' 



Otto Charles Glaser : ' The Larva of Fasciolaria 

 tulipa (var. distans) .' 



Elliot Snell Hall: I., 'A Study of Some New 

 Semi-permeable Membranes ' ; II., ' Experiments on 

 the Preparation of Porous Cups suitable for the 

 Measurement of Osmotic Pressure.' 



Henry Dickinson Hill : ' Measurement of Self- 

 Inductance.' 



Arthur Isaac Kendall : ' An Investigation of the 

 Methods of Bacterial Technique, Preparation of 

 Cultural Media, Cultural Characteristics and the 

 Classification of Bacteria.' 



Ernest Gale Martin : ' An Experimental Study 

 of the Rhythmic Activity of Strips of Heart 

 Muscle.' 



John Joseph Rutledge : ' The Clinton Iron Ores 

 of Stone Valley, Huntingdon County, Pennsyl- 

 vania.' 



Harry William Springsteen : ' The Magnetic 

 Rotatory Dispersion of Sodium Vapor.' 



Charles Kephart Swartz : ' The Columbus For- 

 mation of Central-Northern Ohio, including an Ac- 

 count of the Geology of the Eastern Part of Mar- 

 blehead Peninsula.' 



David Hilt Tennent : ' A Study of the Life-His- 

 tory of Bucephalus haimeanus, a Parasite of the 

 Oyster.' 



