r, 



TIk' aliovc result is sli-^litly jiu'.itor tlmn tliut olitniiicil l>y tlie um? of pi«iu'n»Ily 

 aic»'ptetl I'onnOlivs for tlie oiliuliitioii «if tlio viiliu- of «/ in any Intittide iuk wan 

 also till' case in the Tokio vuhu- of ij). Tims ih»* foriiinlu 



»/ = !tSO.«;0")«; — 2 TmöS cos •_» >, - .O O Kj;5 /( ( VmW Kv.-rt tt's ( '. O. S Sysi.-nd. 



iniik<-s _</ in the lutitnili* '>f Sa|»|M>ro 



ItS0.4.'i o. ni. |ier. «fc. |ier. ms-. 



Ill ilie .Astro. NiK-li., No. 2228, I'rof. Listiu'.: ^ivi-s tin- tnllowiii^ iomhuki 

 ,/ = ;i7s.072S 4- :«As7r. sin- i> 



wlufli gives 



1/ = !iS().44 c'. ni. [n-r sec. |>er ki\ 



.\j:;iin the forniiilii 



,j = 9,SO.G.3 2.:)."):) CMS 2 / 



«^iven by Mujor Hei-scliel in the rhilosoiiiiieiil Mii^iixine for June I.S7I> ^ivefl 

 0S().4n e. tn. per sec. j)er see. 



.\s liDwever the aUive furniulHS are only to lie reg.inled us f^iviii'.; an 

 ajiiiroxiniate value of </ in any lafifmle, tliey ntford hut littl« test on our f^iiccial 

 result. It will lie iierhaps more inti-n-stiiit; to com|iare the value of </ found 

 from aetual exiierinii-iit at other stations in nearly the Nuue latitude. Tlio 

 only place we can tind for tliis |iur|iohe is Toulon on the »lUthern cmwi of 

 Fr€\ncc, — one of the stations in an elalionite series of |ienduluni e.\|ierinient8 

 made by Caiitaiti DnpHrry. Its latitmle is 43° 7' 20" N, so tliat it ditfers from 

 that of S;ip]Miro hy '.i' 2(i" l>u|M-rry*K rcstdt is ^iven in terms of tli«' tinmlier 

 of vilirations in a day maile then' l>y a London seconds pendulum^ 'i'he value 

 of;/ at London is VtSLl.*)?, and the value of 7 at Toulon come« out to lie 980.412 

 which is somewhat less than the SapjMjro value although tlie latitude of Toulon 

 is three anil a half minutes higher. From this it is to lie inferre«! that in the 

 sime latitude the value of // here is slitjhtly greater than on other meridians. 

 So far as the Sapporo observation is concerned, the difference cannot be 

 attributed to local causes a.s Sapporo is situated in a vast plain at a distance of 

 a f'-w mill's from the sea. 



In the article referred to above a great number of R'sultji of |ienduluin 

 e.xi>eriments made at various localities are given, among whicii we riml n deter- 

 mination made at the Bonin Islands by Captain LfUtke. Krouj the combinifl 

 result of all the observations there recorded, Mr. Baily ditluccil a tonniila I'rom 

 which the nuiubers of vibrations at the resjiective localities were cjilculat«>d, and 

 these are given under the heading "Computinl' . From these it may be seen 

 that the difference lietween theobs<'rved and computed numbers is «greater in the 

 case of the Bonin Islands than at any other station. In other nrsjiects as well 

 as in geographica! position, the Bonin Islands stand isolate«! from the rest. 

 The following are the figures given. 



' Kiicyct(>|i«-diu Britaiinxa: Kiirhtli E<l. Vol. IX Art. " Ki(fure uf the Earth/' 



