(Rece iv ed Fe bru ar y 3, 1965)This pape r s umm a ri zes th e preliminary res ults ob tai ne d b y diffe re nt sc ie nti s ts workin g a t th e tw o In s titutes on a co mm o n program co nce rn e d ma inl y with mi cropu lsati on s tudies be tw ee n tw o conju ga te a reas a t a geo ma gne ti c la ti tud e of 57°. Morphological studi es and di gital co mputations of corre la tio n fun c ti o ns are made on th e ba s is of the c hart reco rd s obtai ne d at the two st atio ns . Th e s ig nal be in g reco rded ind e pe nd e nt ly on mag ne ti c tape, s pec tral a na lyses a re a vailab le a lso. The principal co nclu s ions a re the fo ll ow in g:Pc 1 e ve nt s occ ur s imult a neous ly at th e two stat ions, th e amplitud e be ing s tro nger in th e north e rn he mi s phe re for the pe r iod s tud ied (J an uary a nd Fe bruar y 1964). Th e fre qu e nc ies of the osc illati ons, and more gen e ra ll y the spectral sha pe of the s ig na l as a fun c ti on of tim e , a re ve r y s imilar a t th e two st a tions. The tra in s of osc ill atio ns a re tim e-s hift ed be twee n the tw o he mi s pheres by a pproxim a te ly hal f the re pe titi on pe riod , confirmin g so me oth e r expe rim e ntal res ult s a nd ex cludin g so me t heo ri es. The co rre lati on fun c tion me thod see ms to be ab le to giv e more de ta il s a bout the spati a l a nd tim e re lations be tw ee n phe nomena in two co njugat e areas .So me results co nce rning the po lariza tion a t a s in gle s tati on and the p hase re lat ions be t wee n diffe re nt points are a lso giv e n.

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