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BAER, Karl Ernst von (1792-1876). Über Entwickelungsgeschichte der Thiere. Beobachtung und Reflexion. Königsburg: bei den Brudern Bornträger, 1828-37. 3 parts in 2 volumes, 4° (243 x 212mm). 7 engraved plates, 4 hand-coloured, folding printed table. Contemporary boards, red title-labels on spines (joints and extremities lightly rubbed). Provenance: Karolinska Institutet (contemporary library stamp on title, later stamps in blue of various sizes, many small discreet ones scattered throughout the 2 volumes).
FIRST EDITION of Baer's Magnum opus in which his discovery of the mammalian ovum ended a search that had begun over 150 years earlier when Harvey propounded that all animals come from eggs. 'In his more extensive work [his 'De ovi mammalium et hominis genesi' had been published in 1827] 'On the Embryology of Animals' Baer gathered together with great knowledge and scrupulous care all the known facts of embryology and followed in detail the development of the classical subject of embryological research, the hen's egg. He proceeded from this to study the embryological development of the vertebrates in general and subsequently to propose four basic principles which provided a sound basis for the foundation of a new branch of science' (PMM 228b). Horblitt 9a; Garrison and Morton 479. (2)
FIRST EDITION of Baer's Magnum opus in which his discovery of the mammalian ovum ended a search that had begun over 150 years earlier when Harvey propounded that all animals come from eggs. 'In his more extensive work [his 'De ovi mammalium et hominis genesi' had been published in 1827] 'On the Embryology of Animals' Baer gathered together with great knowledge and scrupulous care all the known facts of embryology and followed in detail the development of the classical subject of embryological research, the hen's egg. He proceeded from this to study the embryological development of the vertebrates in general and subsequently to propose four basic principles which provided a sound basis for the foundation of a new branch of science' (PMM 228b). Horblitt 9a; Garrison and Morton 479. (2)