Paper, 'A bacteria-killing globulin' by E H [Ernest Hanbury] Hankin Hankin writes: 'The results described in the present paper were arrived at by the author while trying to discover the nature of the substance to which the bacteria-killing powers of the blood serum were due. The results obtained by Nuttall, Buchner, and Nissen have shown that the blood serum, independently of any cellular elements, has a certain power of killing bacteria. The method used by these authors, and which I have applied to this research, is to mix a small quantity of a culture with a few cubic centimeters of blood serum.' Annotations in pencil and ink. Includes one graph of a temperature chart relating to experimental observations. Subject: Physiology / Bacteriology Received 21 May 1890. Read 22 May 1890. Communicated by Charles Smart Roy. A version of this paper was published in volume 48 of the Proceedings of the Royal Society as 'A bacteria-killing globulin'. 1890