X Table of Contents. 



 ' PAGES 



III. Cholkra in the Non-endemic Area of Bengal. 



Chapter I. — I'Tie seasonal prevalence of cholera in non-endemic areas of the Be7igal Presi- 

 dency. — (a) The leading geological features of the " transition " area, and of the Gangetic plain 

 eastward of 84° east longitude — (ft) Prevalence of cholera according to monthly periods in the 

 non-endemic area in Bengal, and the mean monthly rainfall — (c) Prevalence of cholera according 

 to seasons in the non-endemic area, and the mean rainfall for the same seasons . . . 259 — 2fi9 



Chapter II. — Analysis of data furnished hy individual stations selected to illvstrate Cholera- 

 prevalence and physical 2'henoviena in non-endemic areas. — (a) Selected stations, Oudh and the 

 North-Westem Provinces — 1, Benares ; 2, Allahabad ; 3, Fyzabad ; 4, Lucknow ; 5, Cawnpore ; 

 6, Agra ; 7, Meerut — (Z») Selected stations in Eajputana, Bundelcund, and the Central Provinces 

 — 1, Morar, Jhansie, Saugor ; 2, Jubbulpore ; 3, Raipore ; 4, Nagpore — (c) Selected stations in the 

 Punjab — 1, Mean Meer and Lahore ; 2, Peshawur 270 — 283 



IV. General Conclusions. 



Chapter I. — A comjMrison of the princi2)al physical conditions characterising the various 

 seasons of cholera-prevalence in the endemic and, non-endemic areas 284 — 288 



Chapter II. — The phenomena of seasonal flucttiation in the prevalence of cholera considered 

 in reference to the jyrincipal theories regarding the essential cause of the disease. — (a) As observed 

 in Calcutta. — (5) As observed in localities in the endemic aiea other than Calcutta — (c) As observed 

 in the non-endemic area 288 — 295 



Chapter 111.— Conclusion 296—299 



Tables I — VII. — A summary of the registers of observations on water-level, etc., taken in the 

 Bengal Presidency during 1870 to 1876 301—320 



A Memorandum on the Cholera Outbreak op 1881 at Aden. By Dr. T. R Lewis. 1882. 



Cholera at Aden, 1881. preceded by heavy mortality from bowel complaints— Condition of 

 the persons and the localities affected — The outbreak occurred during Ramazan amongst Somalis 

 whilst discharging cargo from the SS. Columhian—The disease restricted for some time to the 

 coolies of one locality — One of the earlier cases was a female residing in this locality, but wholly 

 unconnected with the Columbian — Occurrence of the disease in the Maala village eleven days 

 after its commencement at Tawahi — The proportion of women and children attacked much greater 

 at Maala than at Tawahi — The previous history of the disease amongst the coolies not wholly 

 inconsistent with the view that cholera may have existed even before the 1st of August, though 

 the first recognised case occurred on this date — The Special Committee's opinion as to the cause of 

 the outbreak, and Dr. Moore's explanation of the probable modus operandi, not borne out by the 

 facts — The condition of the ship, also her previous and subsequent history, appear to exonerate 

 her from all direct blame — An assumed suspicious case amongst the crew — The voyage to Jeddah 

 and the return voyage to Bombay — The probability that the disease had been acquired on shore 

 much greater than that it had been acquired on board ship— The question of the vitality and 

 transportability of the supposed cholera germs — No cholera at Aden between 1867 and 1881 — The 

 epidemic of 1867 attributed to '-choleraic blasts" — The possibility of the disease being of local 

 origin very generally ignored — The influence of the promulgation of current theoretical views — 

 The past history of Aden furnishes strong evidence as to the non-transportability of cholera by 

 ship — So does that of the Andamans — The marked exemption of the Andamans from cholera — 

 Conclusion 321—328 



A Memorandum on the " Comma-shaped Bacillus " alleged to be the cause of 



Cholera. By Dr. T. R. Lewis. 1884. 



Visit to Mai-seilles during cholera prevalence — Epitome of history of the German Cholera 

 Commission in Egypt and India — Discovery of Dr. Robert Koch of straight bacilli in cholera 

 specimens from India — Announcement in February that the specific bacillus of cholera is comma- 

 shaped — Assertion by Dr. Koch that it is never found except in cases of cholera — Identical bacilli 

 found by author in secretions of mouths of healthy persons — Comparative measurements of 

 comma-bacilli of choleraic material and secretions of the mouth in health — Nature of the 

 bacillus 329 — 383 



