Page:The Harveian oration 1898.djvu/50

 serve to revolutionise uur present methods of clinical investiirntlon.*

Recent researches have been fruitful in respect of Improved methods of vaccination, and of securing the absolute purltv of vaccine lymph. Our Milroy Lecturer of tills vear.t to whom is due the credit of the work, has made us fully aware of the steps by which the bacteriolog}' of both human and calf lym})h has been studied. The result has been the Introduction of glycerlnated calf vaccine lymph which now meets every re(._^ulrement, whether demanded by the scientific bacteriologist, the medical practitioner, or the reason- able portion of the public. This discovery appears to me to open up new fields of study. The influence of glycerine in destroying some of the most noxious microbes which may gain access to ordinary vaccine lymph in various ways, is very noteworthy and im- portant, and I cannot but imagine that this agent may yet be found of more extended usefulness as a bactericide. It is surely significant that some of the most virulent germs, including those productive

Democritus's well, that are destined to be di'awn up into day by the ceaseless indastry of coming ages." — Letter to John Daniel Ilorst, rrinci2xd Physician of Ilesse-Darrastadt. Harvey. 1C54.
 * " Nor do I doubt but that many things still lie hidden in

t Doctor Sydney Monckton Copeman, a Member of this College. 46