Book digitized by Google from the library of the University of California and uploaded to the Internet Archive by user tpb. Reprint of the l853 ed Bibliographical footnotes On the circulation of sap in plants, by H. Hoffmann. - Upon the male of Argonauta Argo and the Hectocotyli, by H. Müller. - A few remarks upon Hectocotylus, by C.T. von Siebold. - Investigation of the question: does cellulose form the basis of all vegetable membranes? By H. von Mohl. - Memoir upon the Hectocotyli and the males of certain cephalopods, by J.B. Verany and C. Vogt. - Organographical observations on certain epigynous monocotyledons, by H. Crüger. - Fragments relating to philosophical zoology, by K.E. von Baer. -On the development of Zostera, by W. Hofmeister. - On the winding of leaves, by M. Wichura. - On the development of the ascidians, by A. Krohn. - Observations on the development of the Pectinibranchiata, by Koren and Danielssen