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solstioe, and a return krom west to oast ketween tko soutkernand tke nortkern solstioe, tko amplitudo boing akout 3 Minute«ok aro. 1'ko tur?»,!A per/o^» u/ t/is i/ear aro not, as mauz' migktde disposod to antieipate, //iase mo?t//!S', /» m/iic/« t/ie /e»t/ier«/«i ea/ t/t? «»r/ace of 0»?° ^/anet, or o/ //«« xuidsoi/, or o/' t/«e «/,«o-xp/t?re ^as kar as wo possess tko moans ok sudging ok tko lern-poraturo ok tko atmospkero) «//a/nx t/s »taa,!M»»t »»</ /«/«»«o/o.Ltations so diverselz' situaked would indosd present in tkesorespoots //»?,,»/o co?!di//o?» ok great variotx: wkereas unikormitz-in tko opoek ok tko /»,'»/,«A periods is a not kess oonspiououskeaturo in tko annual Variation tkan similsritz- ot ekarsoter andnumerioal value. Xt all tko Station« tke so/L/ice^ aro tke turniugperiods ok tke annual Variation at tlro trour ok wkiok wo arotroating. — 'Iko onlz- periods ok tko z-oar in wkiok tko diurnalor korar^ Variation st tkat kour does actusllz' disappoar, aro attko eq'utnoa??», wken tko sun is passing kroin tko one kemispkeroto tko otkor, and wken tko magnotio dirootion in tko oourso okits annual Variation krom east to wost, or viee versa, eoinoidoswitk tko dirootion wkiok is tko rnoan doolination ok all tkomontks and ok all tko kours. — 1'ko «««««/ r«r/«//o» is ob-viouslx eonneotod witk, and dopondent un, tko eait/dx ?tosi/to»in its orbit relativolz- to tko sun, around wkiok it rovolvos; astko dtitittt,/ rariat/o» is oonnoelod witk and dopondent on tkoro/at/on o/ //t« eart/t on its axis, kz- wkiok oaok inoridian sue-cessivelz- passes tkrougk overz- angle ok inolination to tko sun intko round ok24 kours.« Sabine on tko annual and diurnalvariations, in dem noch nicht erschienenen 2ten Bande der OK-sorvations inado at tko magn. and moteorol. Oksorva-tory at lorouto p. XVII—XX. Vergl. auch seine Abhandlungon tko annual Variation ok tko magnotio Doolinationat dikkeront periods ok tko Daz' in den ? Kilos. 'Irans gel.kor I8SI ?. II. p. 633, und die Einleitung in die Okserv. inadosttkeOksorvatorxatllokarton Vol. I. p. XXXIV—XXXVI.

" (S. 8k.) Sabine on tko moans adopted kor dotor-mining tko aksoiute values, sooularcksngo and annualVariation ok tko torrestrial magnotio b'oroe, in denI'kil. 1'rsnsaet. kor I83V D. I. p. 216. Auch in Sabine's Er-öffnungsrede der Versammlung zu Belfast Meeting ok tko