Paper, 'A contribution to the knowledge of protection against infectious diseases' by Alfred Lingard Lingard writes: 'It has long been known, and it is now a well-established fact, that various eruptive fevers and blood diseases from which the mother may suffer, can be communicated to the foetus in utero. There is evidence also to prove that a disease may be transmitted to the foetus through a mother who is herself insusceptible to contagium, as in the case of a child having been born covered with small-pox eruption, the mother being quite free from it. The following are the diseases upon which the most important observations have been made:—Syphilis, smallpox, tuberculosis, anthrax, and relapsing fever.' Annotations in pencil and ink. Subject: Pathology Received 3 December 1888. Read 20 December 1888. Communicated by Edward Emanuel Klein. A version of this paper was published in volume 45 of the Proceedings of the Royal Society as 'A contribution to the knowledge of protection against infectious diseases'. 1888