1. An introduction to the study of natural history: in a series of lectures delivered in the hall of the College of Physicians and Surgeons, New York Author(s): Agassiz, Louis, 1807-1873 Publication: New York : Greeley & McElrath, 1847 Subject(s): Natural HistoryAnimal Population Groups
2. Twelve lectures on comparative embryology: delivered before the Lowell Institute, in Boston, December and January, 1848-9 Author(s): Agassiz, Louis, 1807-1873 Publication: Boston : Redding & Co. : Gould, Kendall & Lincoln : James Munroe & Co. ; New York : Dewitt & Davenport ; Philadelphia : G.B. Zieber, & Co., 1849 Subject(s): Embryonic StructuresAnatomy, Comparative