§ Mr. GROVESasked the Minister of Health what processes are adopted after the collection of the lymph material from calves for vaccine, and what substances are added to it; and why such substances are added?
§ Sir K. WOODThe lymph material collected from calves for vaccine is weighed and reduced to an emulsion with a known weight of a diluent consisting of glycerine, distilled water and oil of cloves. The diluent is used to bring the lymph material to a suitable consistency, and to get rid of extraneous bacteria.