Why did U.S. State Department purchase frozen penguin pineal glands from Argentina?

Are you in the mood for a mystery?
Among the treasure trove of documents obtained by WikiLeaks is a very curious telegram on August 1, 1973, sent from Buenos Aires, Argentina to the U.S. State Department, concerning the shipment of frozen penguin pineal glands. The telegram says the shipment would arrive in Boston on August 4, 1973.
 https://www.disclose.tv/unsolved-mystery-why-did-the-us-state
 https://archive.is/20171204215058/https://fellowshipoftheminds
 https://wikileaks.org/plusd/cables/1973BUENOS05632_b.html
 https://www.sciencedirect.com/science/article/pii/0016648073901068