Castoreum is very low, around 300 pounds, whereas vanillin is over 2.6 million pounds annually. Castoreum has been traditionally used in Sweden for flavoring schnapps commonly referred to as "Bäverhojt" (literally, "beaver shout"). Castoreum is also used to contribute to the flavor and odor of cigarettes. Medieval beekeepers used castoreum to increase honey production. Castoreum Castoreum is a yellowish exudate from the castor sacs of the mature North American beaver ("Castor canadensis") and the European beaver ("Castor fiber"). Beavers use castoreum in combination with urine to scent mark their territory. Both beaver sexes have a pair of castor sacs and a
Cybernetics: Or Control and Communication in the Animal and the Machine derived from Maltz's work. "Cybernetics" became a surprise bestseller and was widely read beyond the technical audience that Wiener had expected. In response he wrote "The Human Use of Human Beings" in which he further explored the social and psychological implications in a format more suited to the non-technical reader. In 1954, Marie Neurath produced a children's book "Machines which seem to Think" , which introduced the concepts of "Cybernetics", control systems and negative feedback in an accessible format. Cybernetics: Or Control and Communication in the Animal and the Machine Cybernetics: Or Control and Communication in the Animal and the