lu 



i.v N... :?. 



From till- iirettHÜiif; tiiltlt* it will 1h' seen tlint iim;;iu-t Nc >. MilJirol 

 considerable clmi);;e during; tlie excursion, und tlienfore tlie rcMilt ;;iven li_v it 

 can Imrdly l»e relied npon. 



I'rof Metidenliall took tlie vnliie /J'.UI e\pre(ij*ed in the ('enti-inelre-fJninimc- 

 Second system of units, fts tlie most prolmltle value of the liori/.ontal com]M)nent of 

 the earth's magnetic force at Tokio, after a careful examiimtion of the lesidtn 

 obtained by I^Ir. Scliiitt, Commander Sampson, anil othen«, during the »nrnmer 

 of 18S0. If in the absence of any Inter determination we accept tliis as the 

 present value for Tokio, wc obtain 



0.268 

 as the value of the Horizontal Intensity at Sap|>oro. 



TIIK l.NI>, 



