Decembek 30, 1904.] 



SCIENCE. 



931 



and solar phenomena, reported on the recent 

 meeting of the sub-committee at Cambridge. 

 At that meeting the invitation of the Na- 

 tional Academy of Sciences to cooperate with 

 the other committees was accepted. 



A short discussion followed on a provisional 

 program of observations, at the conclusion of 

 which Professor Turner nominated the follow- 

 ing gentlemen as a committee to prepare a 

 provisional program, such committee to have 

 power to add to its number at discretion : 



Professor Gfeorge E. Hale, 

 Professor Arthur Schuster, 

 Professor Svante Arrhenius. 



Suggestions from M. Deslandres as to ob- 

 servations to be undertaken, and the adoption 

 of certain names of instruments and solar 

 phenomena, were, at the suggestion of Pro- 

 fessor Poincare, referred to the committee on 

 program. 



Following a discussion of routine measure- 

 ments and computation Professor Turner of- 

 fered, on behalf of the Oxford University 

 Observatory, to undertake a portion of this 

 work. 



A motion was therefore made by Mr. Abbot 

 that the international committee enter into 

 negotiations with the Oxford University Ob- 

 servatory with the view of providing for the 

 measurement of plates and the reduction of 

 solar observations. 



This motion was seconded by Professor 

 Campbell and adopted. 



The suggestion was made by Dr. Bauer that 

 if visual magnetic observations, especially 

 magnetic observations at the eclipse of 1905, 

 could be made at observatories with special 

 instruments provided for the purpose, it was 

 practically certain that the reduction of such 

 observations would be undertaken by the Car- 

 negie Institution. 



A memoir on standards of wave-length, pre- 

 pared by MM. Perot and Fabry on behalf of 

 the Physical Society of France, was presented 

 by Professor Poincare.* 



A motion that standards of wave-length 

 should be determined from terrestrial instead 



"To be published in the December number of 

 the Astrcpliysical Jotirnah 



of solar sources was referred for considera- 

 tion to the international committee. 



Professor Crew discussed the question of 

 standards of wave-length, and pointed out the 

 necessity of replacing Rowland's standards by 

 a new system. He also presented a paper on 

 this subject by Professor Kayser and a letter 

 from Professor Michelson. 



Mr. Jewell presented in abstract a paper on 

 Rowland's standards. 



A motion by Professor Poincare was then 

 adopted referring these communications to 

 the international committee. 



Owing to a lack of time for discussion the 

 subject of total solar eclipses was referred to 

 the international committee upon motion of 

 Professor Campbell. 



Oxford and Meudon were suggested as 

 places for the next meeting. The interna- 

 tional committee was empowered, to decide 

 both the place and time of meeting on motion 

 of Professor Frost, seconded by Professor 

 Poincare. 



Upon motion of Professor Poincare the 

 thanks of the conference were tendered to 

 Professor Hale for his interest and activity in 

 connection with the conference. 



The conference then adjourned. 



Following is a list of committees and dele- 

 gates appointed by various societies. Other 

 societies will appoint committees in the near 

 future : 



Royal Society of England.— Huggms, Christie. 

 Lockyer, Schuster, Newall, committee; Turner, 

 delegate. 



Royal Astronomical Society. — Turner, and 

 others to be appointed, committee; Turner, dele- 

 gate. 



Astronomical Society of France. — Deslandres. 

 de la Baume Pluvinel, CJuillaume, and others not 

 yet named, committee ; Poincarg, delegate. 



French Physical Society. — Poincarg, Fabry. 

 Perot, Deslandres, and others not yet named, com- 

 mittee; Poincarg, delegate. 



German Physical Society. — Ebert, Kayser, 

 Kreusler, Lummer, Pringsheim, Runge, Straubel, 

 Wilsing, committee. 



Amsterdam Academy of Sciences. — Kapteyn, 

 Julius, committee; Kapteyn, delegate. 



Society of Italian Spectroscopists. — Tacchini, 

 Piicco, Chlstonl, Mascarl, committee. 



