You can read a news article here about Dr. August Hirt, who experimented on Jews at the Naztweiler concention camp during World War II.
I wrote about the Natzweiler gas chamber on this previous blog post: https://furtherglory.wordpress.com/2011/08/04/the-so-called-lethal-gas-chamber-at-natzweiler/
I have a page about Dr. August Hirt and his experiments on my website at http://www.scrapbookpages.com/Natzweiler/History/GasChamber.html
The following quote is from my website:
Le Struthof, as the Natzweiler camp is known to the French, was located 31 miles from Strasbourg where Dr. August Hirt, a Professor at the University of Strasbourg, was conducting research on racial characteristics. When he requested Jewish skeletons that were undamaged by bullet holes or body blows, Heinrich Himmler ordered that Jews should be brought from Auschwitz to Natzweiler so that they could be killed in a gas chamber there.
In August 1943, a special gas chamber was constructed by adapting an existing building, formerly owned by the Struthof hotel, which was located about a mile from the concentration camp on a side road. This room had previously been used as a refrigerator room by the hotel.
Killing the Jews in one of the gas chambers at Auschwitz and shipping the skeletons to Strasbourg wouldn’t do — the skeletons had to be prepared with great care by Dr. Hirt himself.
According to a Tübingen Professor, Dr. Hans-Joachim Lang, two anthropologists, who were both members of the SS, Dr. Hans Fleischhacker and Bruno Beger, were sent in June 1943 to Auschwitz to select Jews to be gassed so that their skeletons could be added to the rassistische/rassenideologische collection of Dr. August Hirt. There were 57 men and 29 women in the group that was selected.