Case of Margaret Tilbery Water-colour illustrations of the case of Margaret Tilbery. In the first illustration, dated 5 December 1838, Margaret's age is given as 10 weeks. The illustration shows the skin around the left eye is badly [infected] and has covered the whole eye socket. The second illustration, dated 9th February 1839, gives Margaret's age as 4 months and 2 weeks. The left eye is now visible although there is still discoloration and skin disease around the eye. 5 December 1838, 9 February 1839