§ SIR W. J. COLLINS (St. Pancras, W.)
To ask the President of the Local Government Board if he will state the original sources from which the stocks of lymph now used or supplied by the national vaccine establishment were derived; whether obtained in this country or from abroad; and the evidence upon which the genuineness of the vaccine derived from the animal originally yielding the same was established.
(Answered by Mr. John Burns.) I think I must refer my hon. friend to my reply to the Question on this subject which he put to me on June 28th last,† but I may add that no lymph which, on being passed through a series of calves, is productive of appearances differing in any way from those characteristic of vaccinia in the calf is issued from the National Vaccine Establishment.