This book illustrates the advances that may be expected in medicine when ample research funds make possible the collaboration on a single research project of experts in many different fields. The technic of cultivation of whole organs in the Lindbergh pump is described in detail, and the results of some of the cultures of whole organs are described and illustrated as proof of the efficiency of the method. The description of the construction, principle, manner of assembly, inspection and operation of the apparatus are by Charles A. Lindbergh. The description of the perfusing mediums, the preparation of operating material and antiseptic solutions are borrowed from the book by R. C. Parker, Methods of Tissue Culture (New York, Paul C. Hoeber, Inc., 1938). The introduction and chapters on preparation of organs and anatomic regions and on behavior of organs outside the body and the conclusions are by Alexis Carrel.