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moulds began to degenerate and to partly disappear. In those specimens which had previously been cleaned and then treated in the same way with the bichloride even at the end of 8 months, no new crop of either bacteria or fungi has yet made its appearance while formerly, without the bichloride a [[strikethrough]] mouldy [[/strikethrough]] monthly crop was usually sufficient to envelop the specimen.
The climate of Washington seems to me particularly favorable to the growth and development of these parasitical organisms. The atmosphere is moist and damp a portion of the year accompanied with high temperatures and it is perhaps to be supposed that collections of this kind in this vicinity require more attention in this particular than those in the more temperate climates.
On reporting the good results obtained by means of this germicidal agent to the members of the Biological Society, a gentleman asserted