Glass bottle labelled ‘Mur. Hyd’ – perchloride of mercury. Cyriax noted it was 7/8 full and contained 3oz 4 dr. Percholoride of mercury. From 'The Horse - Its Treatment In Health And Disease' Vol6-7, 1905 we learn that percholride of mercury is “A solution of this substance, which is commonly called corrosive sublimate, is the most powerful antiseptic known to science, and, freely diluted (see the table above), is employed as an antiseptic agent, and also in the preparation of instruments and appliances for surgical operations. It is injected into the various cavities of the body, applied as a lotion externally, and used in the preparation of lint gauze, cotton, and other antiseptic dressings. For disinfecting purposes, the strength recommended is from 1 in 1500 to 1 in 10,000 parts. Four grains in a quart of distilled water is the proportion commonly employed for washing the hands and appliances to be used in operations."