688 



SCIENCE. 



[N. S. Vol. XXIV. No. 622. 



Spectra, and their Bearing on Stellar Evolution.' 



For the first time a conversazione was held 

 in connection with the meeting. The ex- 

 hibits, according to the program, were as fol- 

 lows : 



• Akthur a. Notes, professor of theoretical 

 chemistry, Massachusetts Institute of Technology: 

 Platinum lined bomb with insulated electrodes for 

 electrical conductivity measurements with solu- 

 tions at high temperatures and pressures. 



Theodore W. Richards, professor of chemistry, 

 Harvard University: Apparatus used in the pre- 

 cise determination of chemical and physicochemical 

 constants including the nephelometer, the adia- 

 batic calorimeter, the device for excluding mois- 

 ture from fused salts, and other apparatus. 



J. B. Woodworth, assistant professor of geo- 

 logy. Harvard University (introduced by W. M. 

 Davis) : Fossil foot-prints, including those of am- 

 phibians, from the Carboniferous shales of Plain- 

 ville (Wrentham), Mass. 



W. M. Davis, professor of geology. Harvard 

 University: Diagrams illustrating a method of re- 

 constructing the original course of a river, now 

 flowing in an incised meandering valley. 



Joseph Barrell, assistant professor of geology, 

 Yale University (introduced by W. M. Davis) : 

 Continental deposits of fluvial origin as indicators 

 of geography and climate. Subaerial conglom- 

 erates, standstones and shales: (1) From the 

 Mauch Chunk Shale (Sub-carboniferous) of east- 

 ern Pennsylvania; (2) from the lower Coal Meas- 

 ures (Carboniferous) of eastern Pennsylvania; 

 (3) from the Newark Shale (Triassic) of Con- 

 necticut and New Jersey. 



B. K. Emerson, professor of geology, Amherst 

 College (introduced by W. M. Davis) : A new 

 geological map of Massachusetts. 



W. North Rice, professor of geology, Wesleyan 

 University: Superintendent Connecticut Geological 

 and Natural History Survey (introduced by W. 

 M. Davis) : Geological map of Connecticut, on 

 scale of four miles to the inch, by H. E. Cryary 

 and H. H. Robinson, to be published by the State 

 Geological and Natural History Survey. 



T. A. Jaggar, Jr., head of the department of 

 geology, Massachusetts Institute of Technology 

 (introduced by W. M. Davis) : Apparatus and 

 product of experiments illustrating the mechanism 

 of rill erosion. Diagrams, photographs, and ap- 

 paratus. 



Henry F. Osborn: (1) Recent restorations of 

 extinct horses of North America, executed by 

 Charles R. Knight, under direction of Henry F. 



Osborn, (A) water-colors, (B) photographs; (2) 

 first complete section of the American Tertia- 

 ries, — a preliminary study. 



R. DeC. Ward, assistant professor of clima- 

 tology. Harvard University (introduced by W. M. 

 Davis) : Some new curves illustrating types of 

 temperature, rainfall and cloudiness in the torrid 

 and the temperate zones. These curves show the 

 variations in the different elements month by 

 month throughout the year. 



Charles P. Bowditch, member of faculty of 

 the Peabody Museum (introduced by F. W. Put- 

 nam) : The temples of the cross, of the foliated 

 cross, and the sun, at Palenque. Maudslay's 

 pla,tes of Palenque. 



Ellsworth Huntington, holder of Hooper Fel- 

 lowship, Harvard University (introduced by W. 

 M. Davis) : Buddhist manuscripts, records and 

 letters inscribed on wooden tablets in the Kha- 

 roothi language, small plaster figures from a Budd- 

 hist lamasery, cord shoes, small plates of leather 

 armor, etc., dating from about the third or fourth 

 century a.d., and collected by the exhibitor in 

 1905 from the sand-buried ruins in the Takla- 

 makan desert in western China. 



F. W. Putnam, curator of the Peabody Museum 

 of Harvard University: Copies of mural paintings 

 from the temple of the tigers. Chicken Itza, Yuca- 

 tan. Copied by Miss Adela C. Breton. 



E. C. Pickering, professor of astronomy, Har- 

 vard University — Harvard College Observatory: 

 Recent work of the Harvard College Observatory; 

 illustrated by diagrams, etc. Discovery of vari- 

 able stars and satellites; methods and results. 

 Studies in stellar spectra and in lunar detail; 

 Peruvian meteorology; diurnal variations at dif- 

 ferent altitudes. 



C. S. Sargent, Arnold Arboretum, Boston: 

 Silvicultural exhibit. 



A. F. Blakeslee, Harvard Botanical Museum, 

 instructor in botany (introduced by W. G. Far- 

 low) : Earliest states of sexuality in plants, illus- 

 trated by cultures of fungi. 



M. A. Chrysler, instructor in botany, Harvard 

 University (introduced by G. L. Goodale) : Cam- 

 bium in the monocotyledons. 



Charles S. Minot, professor of comparative 

 anatomy. Harvard University: Evolution of the 

 automatic microtome; Harvard embryological 

 methods. 



Harold C. Ernst, professor of bacteriology, 

 Harvard University (introduced by W. T. Council- 

 man) : Ultra-violet photomicrography and methods 

 of use. 



J. H. Wright, director of clinico-pathological 



