A peculiar presentiment—the feeling that LSD-25 could possess properties other than those established in my first investigations—induced me, five years after the first synthesis, to produce it once again so that a sample could be given to the pharmacological department for further tests.
This was quite unusual; experimental substances as a rule were definitely stricken from the research program if once found to be lacking in pharmacological interest. Nevertheless, in the spring of 1943, I repeated the synthesis of LSD-25. As in the first synthesis, this involved the production of only a few centigrams of the compound.
I absolutely love this writing. Reminds me of the great "scientific gothic" novels like Frankenstein and Strange Case of Dr Jekyll and Mr Hyde.