. The butterflies of the eastern United States and Canada [microform] : with special reference to New England. Butterflies; Butterflies; Papillons; Papillons. THK MKilUTiOXS OK I5L 1081 that on the 7th of June Higlits of the butterfly were noted at no less than nine or ten widely separated places in different parts of Europe, esjieoially in south-western Germany, Switzerland and Moravia ; in the vicinity of Zurich, an observer, who noted the flight at half past four in the after- noon and found it still continuing at five, calculated that a tiiousand indi- viduals passed over his h
. The butterflies of the eastern United States and Canada [microform] : with special reference to New England. Butterflies; Butterflies; Papillons; Papillons. THK MKilUTiOXS OK I5L 1081 that on the 7th of June Higlits of the butterfly were noted at no less than nine or ten widely separated places in different parts of Europe, esjieoially in south-western Germany, Switzerland and Moravia ; in the vicinity of Zurich, an observer, who noted the flight at half past four in the after- noon and found it still continuing at five, calculated that a tiiousand indi- viduals passed over his head within the space of eigiit minutes, forming a stream about ten metres wide. Near Hiiningen tliev were ol)served cross- ing the Khine for many Iiours, passing in an easterly direction. On the 8th they were observed at Carlsruhc, Strassburg, Stuttgart, and near Zurich, in the last place flying very swiftly in immense swarms, during a couple of hours in the afternoon, over a space a kilometre broad and from two to ten metres higii. On the ilth, Forel reports that a passage of buttci-flies occurred at Morges and Lausanne, lasting from one to four hours ; and it was probably this species seen moving westward at Olmiitz, Moravia, between 1 and 2 i'. m. On the 10th they were observed at Carlsruhe and other places in the vicinity, and at Angers, France, where they passed in a westerly direction against a feeble wind; this was the day on which the flight was observed at Rennes by Oberthiir, who gives some interesting estimates, calculating that the butterflies moved about fifty metres in ten seconds ; sometimes twenty or thirtv would he seen in a sinj^Ie minute, following one another without interruption, sometimes four or five dose together; they flew over all obstacles, passing vertically up the walls of iiouses in their way, always siu'mounting obstacles, never parsing around them. The flight began at half past eleven in the morning, moved in a northerly direction until two o'clo
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbutterflies, bookyear
