Definition of "informing"

Mr. Riach, who had been to the college, spoke to me like a friend when he was not sulking, and told me many curious things, and some that were informing; and even the captain, though he kept me at the stick’s end the most part of the time, would sometimes unbuckle a bit, and tell me of the fine countries he had visited.

1886 May 1 – July 31, Robert Louis Stevenson, Kidnapped, being Memoirs of the Adventures of David Balfour in the Year 1751: […], London, Paris: Cassell & Company, published 1886