July i i, 1907] 



NA TURE 



25» 



congress will visit tlic marine laboratory of the 

 Brooklyn Institute of Arts and Sciences, and the 

 Carnegie station for experimental evolution at Cold 

 Spring Harbour. On August 2q the New York 

 Zoological Society will receive in the morning in the 

 New York Aquarium, and in the afternoon in the 

 Zoological Park ; in the evening there will be a 

 reception in Columbia University library. 



On Friday, August 30, Prof. Henry Fairfield 

 Osborn invites the congress to an excursion up the 

 Hudson to West Point and Garrison. Saturdav 

 will be devoted to the Cniversities of Yale and 

 Princeton. 



On Monday, September 1. the congress will move 

 from New York to Philadelphia ; there will be 

 luncheon at the .Academy of Natural Sciences, fol- 

 lowed by inspection of the library and museum ; 

 there will be an afternoon drive to the Zoological 

 Gardens and Fairmount Park ; in the evening 

 there will be supper at the Philadelphia Country 

 Club. 



On September 3 there will be visits to the American 

 Philosophical Society, Independence Hall, Girard 

 College, the University of Pennsylvania, and there- 

 after the congress will move on to Washington. On 

 September 4 there will be a general meeting in the 

 assemblv hall of the Cosmos Club, Washington, at 

 which addresses of welcome will be given by the 

 secretary of the Smithsonian Institution, the president 

 of the Carnegie Institution, and the president of the 

 W'ashington .Academy of Sciences. This will be fol- 

 lowed bv a visit to the National Zoological Park, the 

 Congressional Library, the United States Department 

 of Agriculture, the Hygienic Laboratory, and other 

 points of zoological interest. In the evening there will 

 be a reception by the Cosmos Club. 



On September s the congress will proceed by boat 

 on the Potomac River to Mt. Vernon, the home of 

 George Washington, and to the United States 

 Navy Proving Station at Indian Head. There will be 

 dinner at Marshall Hall, and an evening reception at 

 the United States National Museum. 



On Saturdav, September 7, an excursion has been 

 arranged to Niagara Falls and across Lake Ontario 

 to Toronto, returning to New York on Monday night 

 or Tuesday morning. 



If fifty members agree to go, there will be an 

 excursion to Bermuda, which will give the members 

 of the congress an opportunity of becoming acquainted 

 with a very interesting semitropical zoological region. 

 Members will have facilities in collecting and pre- 

 serving zoological material. The expenses of the 

 expedition for each participating member will be 

 thirty-two dollars for return passage and about two 

 dollars a day hotel charges while in Bermuda. .After 

 the party lands in Bermuda, the local committee will 

 supply, free of charge, all transportation, carriages, 

 steamers, &c., and such other incidentals as will 

 ensure a successful expedition. It is to be hoped that 

 this 'very attractive part of the programme will be 

 carried out. The inclusive dates fixed for the expedi- 

 tion are September 14-22. 



It mav be noted that the executive committee of the 

 Boston meeting consists of Profs. G. H. Parker 

 (chairman), Samnel Henshaw (secretary), L. O. 

 Howard, J. S. Kingsley, E. L. Mark, and H. F. 

 Osborn. 



If two suggestions from experience might be ven- 

 tured, we would submit that outside each sectional 

 meeting there should be a time-table board showing 

 what precisely is going on, and that each member 

 should wear in his button-hole a number correspond- 

 ing to a printed list, so that strangers to one another 

 may know at once who's who! 

 NO. 1967, VOL. 76] 



7H£ LEICESTER MEETING OF THE BRITISH 

 ASSOCIATION. 



Provisional Programmes of Sections. 

 A RRANGEMENTS for the work of the various 

 •^~*- sections are now approaching completion, and 

 we are able to give the provisional programmes. It 

 is evident from this list of papers and discussions, 

 incomplete thought it is, that many matters of wide 

 scientific interest will be brought forward at Leicester. 



Among the foreign representatives who have ac- 

 cepted invitations to be present are the following : — 

 Section A. : Prof. L. Natanson, Prof. D. J. Korteweg, 

 Prof. H. G. van de Sande Bakhuyzen, Dr. Oskar Back- 

 lund. Prof. Donner, M. Ch. Ferv ; Section B. : Prof. 

 R. Abegg, Prof. A. Tschitschibabin, Prof. T. W. 

 Richards, Prof. A. Werner, Prof. F. M. Jaeger; 

 Section C. : Prof. H. Sjogren, Prof. F. Freeh, Prof. 

 C. Diener, Prof. J. P. Iddings ; Section D. : Prof. H. 

 Simroth ; Section E. : Prof. P. Vidal de la Blache, 

 Prof. M.ax Eckert ; Section H. : Prof.- E. Naville; 

 Section I. : Prof. N. Zuntz; Section K. : Prof. J. P. 

 Lotsy, Prof. R. Chodat, Prof. H. Conwentz, Prof. 

 O. Uhlworm; Section L. : Dr. Otto Anderssen, Dr. 

 F. Ronning, Prof. M. L. Morel. Corresponding 

 members Baron D. Kikuchi, Prof. P. H. Schouve, 

 Prof. R. Nasini, and Prof. George F. Barker have 

 also expressed their intention of being present. 



The address of Prof. A. E. H. Love, F.R.S., the 

 president of Section .A (Mathematical and Physical 

 Science), will be delivered on the morning of Thursday, 

 August I. Several discussions have been arranged. 

 On Friday, .August 2, there is to be one on the con- 

 stitution of the atom, which will be opened by Prof. 

 E. Rutherford, who will be followed by Sir O. Lodge, 

 Mr. G. .A. Schott, and others. On Monday, August 5, 

 Dr. L. Holborn, of Charlottenburg, will open a discus- 

 sion on radiation-pyrometry ; he will be followed by 

 M. C. Fery, of Paris. On' August 6, a paper by Mr. 

 W. Palin £lderton on modern methods of treating ob- 

 servations will consist of an exposition of the methods 

 of Prof. Karl Pearson, chiefly as applied to meteor- 

 ological phenomena. It is hoped that all will attend 

 who are interested in the reduction of observations of 

 any kind, and assist to make the discussion useful. 

 The following papers have also been promised: — 

 On the nature of ionisation. Prof. H. E. .Armstrong; 

 an analytical study of the meteorological observations 

 made at the Glosson Moor kite station during iqo6-7. 

 Miss M. White, Mr. T. V. Pring, and Dr. J. E. 

 Petavel ; recent developments of the methods of fore- 

 casting by means of synoptic charts. Dr. W. N. 

 Shaw; ether density. Sir O. Lodge; saccular sta- 

 bility. Prof. H. Lam'b; modern work on the calculus 

 of variations, Prof. A. R. Forsyth ; exhibition of 

 models of three-dimensional sections of the regular 

 hypersolids in space of four dimensions, Mrs. Stott ; 

 a method of obtaining the chief properties of the ex- 

 ponential function, Prof. .A. E. H. Love; operational 

 invariants. Major MacMahon ; a property of .Abelian 

 aroups, Mr. Harold Hilton ; factorisation of the 

 PeUian terms, Lt.-Col. Cunningham ; on the theory 

 of integral equations, Mr. H. Bateman;_a moun- 

 tain observatory in India, Prof. C. Michie Smith, 

 The various committees connected with the section 

 will also present their annual reports. 



Section B (Chemistry) has made the following pro- 

 visional arrangements':— .August i : Presidential ad- 

 dress, Prof. .A.' Smithells; discussion on valency, to be 

 onened by Prof. \\'. J. Pone, and in which Prof. Werner 

 (Zurich),' Prof. Abegg (Breslau), Prof. Richards (Har- 

 vard), Prof. Jaeger (.Amsterdam), Prof. J. J. Thomson, 

 Mr. W. Barlow! and others will take part. .August 2 : 

 Joint discussion with Section G on explosion tempera- 



