The Natzweiler-Struthof Concentration Camp Homicidal Gas Chamber,
I quote The Enemy :
In February 1942, Dr Sievers submitted to Himmler, through Rudolf Brandt, a report from which the following is an extract read at the Nuremberg Doctors Trial by General Telford Taylor, Chief Counsel for the prosecution at Nuremberg:
"We have a nearly complete collection of skulls of all races and peoples at our disposal. Only very few specimens of skulls of the Jewish race, however, are available with the result that it is impossible to arrive at precise conclusions from examining them. The war in the East now presents us with the opportunity to overcome this deficiency. By procuring the skulls of the Jewish-Bolshevik Commissars, who represent the prototype of the repulsive, but characteristic subhuman, we have the chance now to obtain a palpable, scientific document.
"The best, practical method for obtaining and collecting this skull material could be handled by directing the Wehrmacht to turn over alive all captured Jewish-Bolshevik Commissars to the Field Police. They in turn are to be given special directives to inform a certain office at regular intervals of the number and place of detention of these captured Jews and to give them special close attention and care until a special delegate arrives. This special delegate, who will be in charge of securing the 'material' has the job of taking a series of previously established photographs, anthropological measurements, and in addition has to determine, as far as possible, the background, date of birth, and other personal data of the prisoner. Following the subsequently induced death of the Jew, whose head should not be damaged, the delegate will separate the head from the body and will forward it to its proper point of destination in a hermetically sealed tin can especially produced for this purpose and filled with a conserving fluid.
"Having arrived at the laboratory, the comparison tests and anatomical research on the skull, as well as determination of the race membership of pathological features of the skull form, the form and size of the brain, etc., can proceed. The basis of these studies will be the photos, measurements, and other data supplied on the head, and finally the tests of the skull itself."