M 



FOB THE ADVANCEMENT OP SCIENCE. 



rfiMtr.M* * 



t MtH riMt w IfMth. The pnJocUon 



Vrpfc-ysMjirv^hta. .^ it 



Utioitt of Certain Properties i>ootratotho 



.:, ;, r \s Li.'lt t!i<-v :ITV ] r- 

 d." by John F. llohl.r mnl \V. .1. Iluun 



; ...:,;, i,x PhOtofWphV,' 1 by 



. . i>. ftnitiom f-.r tin' Man.i- 

 b William Hallock a> 



~*a* m,o, 



and the more 

 The latter ho eon- 



*..*. -jsarstss 



ta.ll to POTfel* only to auto mention of a 

 ST BAlKi- tao famtfffrty th. y*. 



i *>- iitiamlr^l JMliMlta M*^***M>ning 

 m Of ail MM CBMBKM4 rirmt iit^ pw 



with the normal solar spec- 

 to his table of stand- 

 Bd. Thn.u K h the spec- 

 established the discov- 



element, argot 



property of green fluorescence when 

 tfceessotne spark ii pnessd through it in prea- 

 tfjoi of benssas ; and iU association in meteoric 

 iron ml various minerals with helium, now 

 proved to be a terrestrial as well as a solar ele- 

 ment. By photographing the spectrum ^of Sat- 

 urn's rifg* iriii'flttffif f>M> relative displace- 



^^i^dJBSP 



irect proof of 

 of these rings. A new 



suhfluac* with double rotatorv power, like 

 qnaru.has ban discovered by WvroubofT. the 

 neutral anhydrous tartrate of rubidium, which 

 to unique in that its rotatory power in the crys- 

 taJttaV staU becomes reversed in solu 



BeelosMiwU* a discussion of certain devel- 

 f is i it i ia physiological opttos. Onediscovery 

 is* that the routine oolor disk has been applied 

 by Ofden N. Rood to tho determination of lu- 

 ' f independently of color by taking ad- 

 i of the flickering appearance on a rota- 

 upon which two parto have different 

 j powers. An extreme case of this is 

 thalof a whiu sector upon a black disk. Ata 

 r M] -,.., ftnei i 



j^ fntmMUpnflT TTWn~l vvui|iin|j HIK * IIAJII wt 



..-;- 1 . ".. :. I ,. : .-.>- ...-..' .." 

 . :: . . . - \:. ! V:.M, !..i! !. ' t 1 V:,'. 



ment of Maxwell that ni 



bv William A. Rogers; "An Experimental InveftU- 



tkm of the Rotary F i-nry D. Carhart; 



. .. : i'.. trie \\ avi i anslogoui to thoss 

 0. h.O.il.l; 



<>f Age up- 



Bronse, Glass, and Steel " and " A New Detennlna- 

 Uon of the Relative Lengths of the Vanl an.l M 



.. 



the Second Law of Thermodynamics," by 

 A. Ban The Method of Reciprocal P- 



the Graphical Treatment of Alternating Currents," 

 by Frederick Bed 



The following papers were presented before a 

 joint meeting of the sections of Astronomy, 

 Physics, Economic Science, and Geography on 



of the retinal sensation 

 length of the incident 



papers we re 



," by fedwani 



- rVw of Alurnstia* Currant In an 



- aod M ThMosraeoeraiBelation 

 Jslssn Dstrie aoa MacoKi Force and their DU- 

 fliiisisin* bfHJahasTL Pnpin; -The Sigulfl- 

 nmse ef CsssrTsma,* -Oo ttZodani Color? and 

 Tae Anslfris of Floral Colons** by J. HTPtUsbury ; 

 *0ta7c '.<. i in Brtihtiissi V digbrenUy Col- 



; 



oftheVoeslCofdshi 



u Relations ot the Weather Bureau to 

 an.l Industry of the Country," by Willis L. Moore; 

 "Solar Magnetic Radiation an.l Weather Forecasta," 

 by Frank H. Bigelow; "Clou. Is an.l tl 

 claturc " by Cleveland Abbe ; u Cloud Photograph] ' 

 (with lantern illustrations), by Alfred J. Ji 



< alifornia Electrical Storms," by John D. 

 Parker. 



C. Chemistry. This section was presided over 

 by Dr. William McMurtric, of Brooklyn, who 

 discussed "The Relation of the Industries to tin-. 

 Advancement of Chemical Science " in his vice- 

 presidential address. At the outset he men- 

 tioned the circumstances which led to the ab- 

 no f chlorine by organic bodies, concerning 

 which Dumas declared that " it is not generally 

 known that the Jheory of substitution owes its 

 source to a soiree in the Tuileries." I >umas had 

 been called upon by his father-in-law, Alexander 

 Brogniart. wno was director of th Srvrcs por- 

 celain works and in a measure a member of the 

 royal household, to examine into the cause of t ho 

 irritating vapors from candles burned in tin-, 

 ballroom, a demand to which Dumas readily ac- 

 ceded, because he had already done some work 

 upon the examination of wax that could not be 

 bleached and was therefore unmerchantable. It 

 was therefore from the application of chemistry 

 to the industries that this fact was establish. .1. 



It seems to make little difference to which 

 branch of chemical work we turn for illustra- 

 tions of these ideas. The losses suffered by 

 Italy and France by the diseases of tho silk 

 worm, the deterioration of the wines, and tho 

 ilismsfs of animals made demands upon tho 

 genius of Pasteur, and thr 



an-1 magnificent results attention has been di- 

 rected to the field of bacteriology and fermenta- 

 tion, and almost a new science has been built 

 upon it The development of the coal-tar in- 

 dustries and the growth of the use of electricity 

 in the production of chemical products was men- 



oned. In conclusion he said: 



It would be impossible in this discussion to cover 

 than a few of the manifold way* in which the 

 ee of chemistry has been advanced by the in- 

 dustries, their want*, and their wastes. The former 



