INTRODUCTION. 



ON ihe inuiiiii.'iiii, It wai frequently impossible to obtain the dew 

 point with either of the hygrometer! of Daniel or I'onillei -, the eva- 

 poration \v:i.s very simdl and slow ; the snow eonlinned almost 1111- 



ohangedj even in itrong sunshine. The \apom- plain, or the height 



at which (In- clouds usually remained, was about fdlOO feel above il,,- 

 !h' horl/.oii above Ibis WHS ill defined, the sea, and sky liein^ 



blended together by a, |,| M ,. ha/,e; willlill till' regions of clollds edlOCS 



were rill-. Daring the whole period of our s(ay, \ve HIIW nothing 

 of I he bl;ickiie,,M of (be heavens uhie.b is spoken of b_y Inivellers; 

 mi tin- i mill ;n\, il appnircd I., us of a, beiiulil'ul blue. One ol'the 

 iiiosl, striking ol' Ihe plienoiiieiia \vns Mie sbadow of the niniiiiliiiii 



(brown on 1 1 ;islern sky, a,s an immense dome, of a light amethyst 



tint on it* Outline, and "i:idimll\ deepening to a dark purple lowimls 

 the rrnlre. 



When :i.bove (In- vapour pbiin, electricity \VIIH ivjidil\ developed; 

 ;it. limes Ihe feeling vva,s th:il ol' beinjr insnbited a,nd ebnr^ed from 

 an eleclricnl mii.chine; Ihe ^old-leu,!' elect romeler .showed Iml litlle 

 ehiini-'e, except ii (\\o in'casions, \vh<'ii il appejired ^really excited. 



'I'lie (|iiiinlily of HIIOW which fell while we were at (be summit of 

 the moiinliiiii, w:is iibont IS inelufs; lit the recruiting station, n.llitnde 

 !)()()(( lee I, there w:is ruin. 'I'he wind, Hir Ihe inosl. ol' our stay, \VIIH 

 Irom I he ;-;onlh we; I, while it wn.s blowing IVoin the noi'lh and norlli- 

 Mfl :il Ililo. The j'reiilesl veloeily ol' the clouds dlirilltf (lie south- 

 West Allies wns round to be 17 miles iin hour. All the ^.-iles \\hich 

 we e-..pi-1-ieneed (sevi'li III 1 1 1 1 1 1 1 1 .< r) , oee.nrred at Iliglll, bein;; most \io- 

 lenl between the hours of II r. M. and I A. M., and but one of Ihest) 

 was fell, ill Honolulu, while at Ililo they <ln| not, e\pern nee nny ^;al((. 

 The clouds were seldom seen above the bei;>bl . ol' SOUK lec'l , e \ ee| ,| 

 fliirin:; the Inrniy \\ea.lhr-r. The lenipei ;il ure o(' I he sea. around the 

 islands is 7!)-5. 



HAWAIIAN IHI.A NI)H TO COLUMBIA El VEE. < >l I r rol 1 1 e I . , ;i lid IVolll 



Ihe Norlhwest (!(i,st, is projected n dia;-ram, I'lale XVI., pa;-e Mli. 

 liotli passages were made in the iisna.l Irnrk which sniling vessels are 

 compelled lo lake. Twenty one days in April were occupied in the 

 first, and twelve, days in November in the laller. After leiivin;.' the 

 Hawaiian Islands we lost the norlheast trades in "I" north latitude; 

 calms, with lijdit variable winds succeeded until Ihe 'JSth parallel ol' 

 latitude, when we bad soul beast and northeast, winds, ami finally as wo 

 approached Ihe eo:i;:|, they came from west and northwest. The fi-ni 



perature of the air and irater continued (o fall rapidly, eipial to I for 



