Creator of the world's first scientific research laboratory. One of the premier chemistry teachers of all time. He set into motion an application of chemical principles that had a profound effect on the future welfare of mankind. For the first time it was possible to produce enough food to feed the growing population. ALS in German, one page, 7 x 12.5, August 23. Untranslated letter, with a response at bottom, also in German. Seal fully intact. In fine condition, with vertical fold through one letter of the signature, a few stray ink marks. RRAuction COA.