

PHYSIO. Pi. 



learn the terms on which their surrender would le 



. led to no tin 



suit. < qicrations w- led, and in 



the middi- .U-r. after an order hud IH-CII 



published tixn the final date 1 



which all the insurgents must make their submis- 

 sion, 58 emissaries of the n-u-1 leaders presented 



thell|se|\V~ l sohelte.l 



pardon for their principals and for the men \\ho 

 had taken part in the rebellion, wh pared 



to surrender ..n ..nditi..n that their Ii\.-s should U- 

 Spared. I G .. neral announced a- his 



that lh< ."tild submit to the 



.in. nt. surrender all arms and am- 

 munition. -ign a formal dK-ument acknowledging 

 SJMIII ^iitv. admit the 



inability to resist further in the face of the 

 su|>eriority of the Sjtanish arms, and promise sol- 

 emnly not "to revt.lt again. The envoys stipulated 

 that Aguinaldo and Llanera should U- con 

 snfch 'he surrender of the 



!.dltion ha\illg been accepted. V 



naldo ordered In- people to assemble on Dec. 25 

 and lav down their arms. 



PIMsH s. I'KIH.IM xv, ol. IN iv.,;. < ul , 

 -(Million of Matter, etc. : , / <ni<l L't/irr. 

 Lodge (London Koyal Society, March 1) giv. - an 

 account of a long series of experiments conducted 

 by himself and < -ontinuation of those re- 



ported in a previous pap.r sse M \nnual ( 'yclopa-- 

 dla." 1S!:{. page fiUii to detect a possible drag'excrted 

 by moving matter on the ether. In addition to the 

 methods therein described he employed one in 

 which the rotating mass of iron was strongly mag- 

 neti/.ed and another in which the steel disks wen 



t'.-d by an in<ulatc<l disk and electrified: but 

 in neither of these ways could he sensibly affect the 

 vcl.-city of light. He accordingly concludes that 

 there is mi observable viscous connection between 



; I.T and matterthat is. that whatever mo- 

 tion moving matter may confer on ether must be 

 invitational. Michelson (" American Journal of 

 Science,** June) concludes, from experiments in 

 which a In-am <.f light was cau<e<l to travel around 

 a rectangle in an east-and-west plane, that either 

 the ether is absolutely at rest everywhere, or that 



irth drags it along up to many thousand 

 miles from the surface, or that the length of all 

 i- alt. -red by motion through the ether. 



-liichar/and Krigar-.M-n/-l c* >it/- 



i'-rlin Academy, November, 



1896)re|)orton the seoond series of their experiments 



for the determination of the constant of gravitation 



and the earth's mean density, which has been carried 



be termination of the first series in 1898. 



toiible balance was used, as in t 

 but instead of weighing two equal metal sphere* 

 a single cube of lead weighing 100.000 kilo- 

 grammes. was supported under the upper and above 

 the lower vale pans. The value finally deduced 

 for the constant of gravitation was G = (6-685 



(W)I1)10 '~' ^Tt' U8in * thb value - tll( - "'" 



gr. set. 



density of the earth was found to be A = (.V505 

 gf t 



md that of B*,, 



li<(llir " U-mann's "Annalen." February) 



asserts that the conception of the ato,,, , .., not be 

 finally superswlwl by the flifferential cqu. 

 applied to a continuum, since this is in itself 

 ultimately based on the conception of discrete 

 structure. The atom, he thinks, has also the ad- 

 vantage of greater immediate clearness and pietur- 

 esqueness over the equation, whether it really ex- 

 ists or not. 



itn'lifi/. P.arus i" Amerii-an 

 .Journal Ol - . ; .eriment > \\ith 



meter and a mirror attached t" 

 a telephone diaphragm. pro\es that the 6ZCU1 

 of the diaj i re-ponding to sounds of faint 



but distinct audidili: ,;i compared with tlu- 



length of sodium light, probably le.s than 

 H> ' iitimetres. 



Int'iixity ami /V/r/.~ |?i..< a (Pa; 



e^.lune % JS) tind-. that if the jnten-ii\ 

 sound decreases the pitch of the noto goes up. 

 when tin- period of vibration remain- the Mine, 



The effects ,j,, |j,,t exceed olie fifth <! a 1"|,e. 



M. . li.i ii i. -. I (rude 



lemann's 44 Ajinalen t n 8epteinber)defl net action 



:i-tance as a relation bet\\, . n t \\ . , l,.dii-. -u. h 

 that the energy of the system d.-|.en<ls not onl\ ..n 

 their velocit i.-- but on their mutual position, lie 



i- s U eh dependence as perfectly logical. 



'iiniii!/. The Hii;ht <.f 'the I 

 has been studied by Walker i L..|id.,n : 



. April S). who regards it as a case of steady 

 motion, of which the circumstances gradually vary. 

 In the more complicated as well as the gimpler 

 pat hs. everything depends on the<-hanges in direc- 

 tion and inclination of the plane of the boomerang. 

 The author explains t hoc changes t|,, 

 working out live cases, j,, which tin- \arious 

 " rounding " and "twisting " enVets agree \\ i: h ex- 

 perimental ! 



Tin l>, minima. Lippmann \ of 



Sciences. .Ian. IN compares the times of oscillation 

 of two pendulums of nearly eijual period by photo- 

 graphing them twice with sparks from a j;n 

 charge at a known time interval and then making 

 inicrometrical measurements on the negative, 

 accuracy of the method i- claimed to be much 

 higher than 1 hat of coinciden 



Liquids. 1/i/i/rotli/inin,, .iletin 



of the Cracow Academy of Sciences", has \\orU, I 

 out a kinetic theory of the equation- \ mo- 



tion of fluids, taking account of the molecular 

 property to which the name -constraint of pi-rtur- 

 bations" has been applied. Natation's theory 

 shows how the equations of Hclmholt / and Nan-on 

 can be verified by supposing t he iO-Oalli 

 of constraint " to satisfy the eimations of an_ 

 momentum. 



I'niiillnrihj. Vincent (Lonilon Physical S. 

 l-'eb. 'jr) has photographed rip|le- on mercury by 

 sudden electric illumination. Such rippl - are in- 

 visible to the naked eye because of their high fre- 

 quency. The photographs show well the phenom- 

 ena of interference and diffraction, and the method 

 promises to be of service in demonstrating the 

 laws of acoustic s mid n pi 



Appleyard (London Physical Society. M. ; 

 has s|,,.,.,-eded iii forming men-nry films' by sending 

 an electric current through two masses of nierciiry 

 separated by a permeable partition. The film forms 

 On the Side next the positive pole and remain- on 

 the diaphragm after it- removal from the appa- 



The author suggests that the enVc? u-iary 



one due to elect ml\ sj* aid.-d by .-|.-r-t ric osino-i-. 



-Ltimor (<'ambridge Philo- 

 sophical Society. .Ian. "2~>t has summed up the 

 tions now maintained by various authorities on this 

 subject. The theory of osmotic |.n --nn can, he 

 thinks, be placed on a basis independent of the law 

 of solubility of pases in the general manner already 

 laid down 'by Prof. .]. Willard (Jibbs. According 

 to this each molecule of the dissolved substance 

 forms for itself a nidus in the solvent that i-. it 

 sensibly influences the molecules around it up to a 

 certain minute distance. Provided the solution is 

 BO dilute that each such complex is most of the 

 time out of range of the influence of the other c m- 



