This method, which in process of time was dignified by the title of a Physiological Arrangement, was insisted upon with more or less pertinacity by the author throughout a long series of publications, some of them separate books, some of them contributed to the memoirs issued by many scientific bodies of various European countries, ceasing only at his death, which in July 1857 found him occupied upon a Conspectus, Generum Avium, that in consequence remains unfinished.
A masterly conspectus of the general character of the Hellenistic kingdoms in their political, economic and social character, their artistic and intellectual culture is given by Beloch, Griech.
For a conspectus of Terentian studies see Teuffel-Schwabe-Warr, History of Roman Literature, and Schanz's Geschichte der romischen Litteratur (3rd ed., 1907).
Pilot Charts of the North Atlantic and North Pacific are issued monthly by the U.S. Hydrographic Office, and of the North Atlantic and of the Indian Ocean and Red Sea by the British Meteorological Office, giving a conspectus of the normal conditions of weather and sea.
His principal works were, Conspectus systematis ornithologiae, mastozologiae, erpetologiae et amphibologiae, Ichthyologiae (Leiden, 1850), Tableau des oiseaux-mouches (Paris, 1854), Ornithologie fossile (Paris, 1858).