Tropical diseases bulletin . Schanghai, ihre Beziehungen zur Temperatur und Feuchtigkeit. [The Periodic Variation of Rat Plague in Shanghai in relation toTemperature and Humidity.]—Ztschr. f. Hyg. u. Mar. 5. No. 1. pp. 1-8. With? charts in text. The authors work is given in useful tables and charts, whichpresent clearly the relations set out for investigation. It will sufficeto reproduce Table I and the charts for 1909 and 1914, since, in eachchart, there is, in the months April to November, a marked fall inrat plague, with a rise in temperature and moisture. Table I
Tropical diseases bulletin . Schanghai, ihre Beziehungen zur Temperatur und Feuchtigkeit. [The Periodic Variation of Rat Plague in Shanghai in relation toTemperature and Humidity.]—Ztschr. f. Hyg. u. Mar. 5. No. 1. pp. 1-8. With? charts in text. The authors work is given in useful tables and charts, whichpresent clearly the relations set out for investigation. It will sufficeto reproduce Table I and the charts for 1909 and 1914, since, in eachchart, there is, in the months April to November, a marked fall inrat plague, with a rise in temperature and moisture. Table I. Number of rats Number Cases Year. found dead of Per cent. of Human and examined. Infected Rats. Plague. 1909 17,364 187 1-08 0 1910 19,559 249 1-27 6 1911 14,929 138 0-90 0 1912 95 0-64 18 1913 13,333 122 0-90 o 1914 12,782 186 1-44 23 To these may be added one chart compounded by Dr. Dold fromthe Report of the Indian Plague Commission (for M. rattus andM. decumanus). J. H. T. W. Vol. 18. No. 5.] Plague. 347 No. of Plague Rats. Temperatu-re Humidity Chart 1.—1909. /9/4 c -<5 I. X 4 c 3 -3 <3 o 5: c§ .?? ./- •^ Av t3 / \ 3^25 _, \ •. ^ V \ -2 3 75 / A V A ^ / \ / / \1 ^5 / / \ V|7 1 k 1 ^0 ^ -7 79/4. 80 - •iOZ 75 it W ? ,^ a I 0 1 ^ >^500 ^ ^300^ 0 200 / \, / \ s. ^•^100nean for n / \ / N V Yeur * V. 1 y -100 -zoo Chart 7.—Showing monthly landings of Plague-infected Rats(M. rattus and M. decumanus) in Bombay, expressed as apercentage above and below the mean for the year.[Based on curves of the Indian Plague Commission.] 34S Plague. [Dec. 15, 1921. Cragg (F. W.). The Distribution o2 the Indian Species of the GenusXenopsylla, with reference to the Immunity of Certain Areas fromPlag
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