During the plague and cholera session, Col. A. J. H. Russell of India dealt with both plague and cholera in that country and emphasized the value of anti-plague and anti-cholera vaccines, stating that they found the use of 8,000,000,- 000 organisms per ec. the most effective in producing a high degree Jof immunity from_ cholera, The value of bacteriophage was, in his opinion, not yet proven, although rapid strides were being made in this line of research.
De. Wa Lien-teh, dealing with plague, said that plague had usually followed the maritime routes in its Jpassage through China, thereby em-Jphasizing the fact that the ordinary domestic rat was the most frequent Jearner of plague, through the [medium of rat-fleas, whilst the me mot was the reservoir of plague in the case of Manchuria, "He put forward many interesting comparative statistics as to the seasonal. occurrence of plague since 1894 both in North and South China, Survey of Ratlea, Dr. C. ¥. Wu, in his discourse, showed that rat-flea survey through: out China was being carried out on fan extensive scale in an endeavour to anticipate any impending outbreak Jot plague and displayed several excellent charts to amplify his points, [He showed from his figures that the spread of bubonic plague in Shanghai was unlikely owing to the rarity the responsible vector, (the Xenopsylla cheopis)—only five per cent. of all fleas caught—and the fact that the cheopis season didn't correspond with the plague season in the endemic areas in South China, Plague in North China, although tending to occur in the autumn (during the cheopis season in Shang-hal) appeared to spend its energy on the spot, rather than spread towards the coast, thereby rendering Shanghat doubly safe from wholesale Drs. Pandit, Chun, Pollltzer ° and 'Yang contributed useful data on the subject of cholera, its sources and the means used in' its suppression.
The whole session was" well intorspersed with discussions, which [proves how very vital to both India and China is the necessity of united effort in stamping out the menace of plague and cholera from the Asiatic
Text read from the printed page and cleaned; old type leaves the occasional error.