518 



KXPKIMTION TO POINT ISAKHOW, ALASKA. 



rentliniix <>/' tlic Hrookf hulinnr intiynHomctcr. 1'glnnmif, Alaxka. December, 1882. 



(in,- ilivNiim of scale = . 0001739 part of vertical force. Monthly means : Teiii]inratii!ii, X .(I, iiiii^ni-toini-t,T .523.7 



