RECORDS OF MEETINGS. 699 



The Chair announced the death of Henry Barker Hill, Resi- 

 dent Fellow in Class I., Section 8. 



The following papers were presented by title : — 



"On Families of Curves which ai'e the Lines of Certain Plane 

 Vectors either Solenoidal or Lamellar. By B. O. Peirce. 



" On the Thermal Conductivities of Certain Pieces of Rock 

 from the Calumet and Hecla Mine." By B. O. Peirce. 



Contributions from the Gray Herbarium. New Series, No. 

 XXV. " A Revision of the Genus Flaveria." By J. R. John- 

 ston. Presented by B. L. Robinson. 



" Spectra of Gases and Metals at High Temperatures." By 

 John Trowbridge. 



The grounds for the award of the Rumford Premium to 

 George E. Hale, of the Yerkes Observatory, were stated by 

 Charles R. Cross, chairman of the Rumford Committee. The 

 medals were presented by the President, and Professor Hale 

 responded, illustrating his recent researches in solar and stellar 

 physics with projections on the screen. 



The following exhibits in the adjoining halls of the Museum 

 were then inspected : — 



" Demonstration of some Phenomena of Optical Mineralogy." 

 By J. E. Wolff. 



" Photomicrographic Illustrations of North American Woods." 

 By E. C. Jeffrey. 



" The Soltwedel Plates of Sugar Cane." By G. L. Goodale. 



" Plant Dissections, Illustrating the Study of Herbarium 

 Specimens." By B. L. Robinson. 



"Some Recent Discoveries in the New England Flora." By 

 M. L. Fernald. 



"A Method of Keeping Ornithological Notes." By William 

 Brewster. 



" Types of Indian Basketry." By F. W. Putnam and W. C. 

 Willoiighby. 



" Phonograph Records of Indian Songs and Note Books of 

 Indian Languages." By R. I>. Dixon. 



" Model of the Cahokia Mound Group." By F. W. Putnam 

 and D. I. IJushnell, Jr. 



