CO129-348 - Governor Sir Lugard - 1908 [7-10] — Page 528

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experience of it is small I think that when great care

is taken to get rid of the last traces of chloroform then

the chloroformed vaccine will be as good as or better

than the glycerinated.

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THE PRESERVATION OF VACCINE LYMPH IN THE TROPICS.

I have recently got aut a Hearson's cool biological Incubator

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I mature glycerinated vaccine at a fixed low temperature

in the incubating chamber and afterwards keep it at about

the freezing point in the ice box of the incubator. It substitutes

precission for the irregularity of an ice chest. Some vaccine

which was partly matured when the apparatus arrived was

stored in this way and has kept well for nearly four months

and will probabely keep much longer. Dr Neild Cook has

succeeded in keeping vaccine from one winter to the next

in India by the judicious use of a cold storage plant,

and I believe it will not be necessary in the future to prepare

vaccine in the Summer in angkäng Hong Kong, but I have been

considering the use of the thermos flask all its principle

for keeping lymph cold when sent to theusers

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