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2017-04-22 09:06:04
Purkinje, Johannes Evangelista [Purkyne, Jan Evangelista]
Beobachtungen und Versuche zur Physiologie der Sinne von J. Purkinje, Doctor der Medizin und Professor der Physiologie zu Breslau. Erstes Bändchen. Beiträge zur Kenntniss des Sehens im subjectiver Hinsicht. Mit 1 Kupfertafel. Zweite unveränderte Auflage
In commission der J. G. Calve'schen Buchhandlung [Johann Gottfried Calve], Prag, 1823. Second edition (identical to the first, only the title page changed). In contemporary hard paper. (11), 4-176, (1) p., and 1 folded, engraved plate. Purkyn?'s doctoral dissertation on inner vision, a milestone in experimental psychology. This treatise, Purkyn?'s doctoral dissertation, is an attempt to find the guiding rules of the inner visual impressions, the "subjective vision". Purkyn? sought to elucidate and quantify the so-called entropionic images, the images can be seen while eyes are closed and the eyelid is turned inward against the eyeball. His work is also known as the first report on the flicker-light induced patterns, the colour and form hallucinations that homogeneous flickering light could cause. Purkyn? describes and classified the different patterns of "subjective vision" and shows these complex figures-coloured stars, spirals, tartans, squares, hexagons- on the appended folded plate. Two issues are recorded of the 1819 first edition of the work, the first with title page gives the publisher as Fr. Vetterl and describes the author as "Candidaten der Medicin", the second with errata, additional dedication, and altered title page, gives the publisher as Calve (just as this edition), and refers to Purkyn? as "Doctor der Medicin". This second edition was published with a cancel title (different title of the dissertation that suggest a subsequent volume, which appeared in 1825, different date, etc.) otherwise identical to the second issue of the 1819 edition, thus could be con … [Click Below for Full Description]
Bookseller: Földvári Books [Budapest, Hungary]
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