In this connection he pointed out that almost every species of mammal had its own peculiar species of fleas, although certain of the commoner Species of fleas were to be found on more than one species of mammal, stich as the common log flea, which was found on the domestic dog, the domestic cat and on man, himself The Importance of fleas could not be because these Insects had been proved to be the carriers of deadly diseases stich as the bubonic plague, his lengthy and extremely: teresting lecture, Mr. Sowerby refe red to. another zoological surprise from China—a fresh water jellyfish which was discovered in the upper reaches of the Yangtze. The discovery, he said, was made by the Tapanese captain of a river steamer, who took preserved specimens of the Hittle creature to Tokyo. These fresh water jelly fish, he explained, were very few in number and were widely Separated in Isolated localities throughout the world.
After dealing with various kinds of fishes found in China, Mr. Sowerby Feferred to the huge sword be sturgeon which, he said, was shaped
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