PIPE-BORNE WATER 193 



525 yards in Bridgetown, Barbados, 

 48 ,, „ Georgetown, Demerara, 



21 1 ,, „ in Port of Spain, Trinidad, 

 72 ,, ,, in Castries, St. Lucia, 

 98 ,, ,, in Grenada, 



125 „ ,, in Kingstown, St. Vincent. 



In these yards I found and examined a total of 

 2,292 w^ater receptacles ; these included 574 buckets, 

 425 barrels, 695 tubs, 392 jars, 114 large tins and 

 cans, 92 vats, also an innumerable number of odd 

 receptacles such as broken bottles and pitchers, small 

 tins, conch shells, calabashes, flower vases, saucers, lily 

 tubs, etc. etc. When mosquito larviE were found, 

 they were those of the Stegomyia calopus. 



Nature of the Watei'-containers. — Each Colony had 

 for the most part its own peculiarities in the way of 

 water-containers. Wherever barrels were used for 

 the storage of water, as in straggling districts and 

 small villages, larvae were always most abundant. In 

 Castries and in other Colonies w^hich were formerly 

 under French rule, the large old-fashioned jars were the 

 great offenders. In George Town, Demerara, vats pre- 

 dominate. In Port of Spain, Trinidad, the antiformicas, 

 as I have previously explained, are a source of danger. 



It was abundantly evident from my visits that 

 in all these six Colonies measures had been taken to 

 abate the stegomyia breeding nuisance. First and 

 foremost, a pipe-borne water supply is now the rule, 

 but it wants further extension. Secondly, the tow^n 

 councils have been fairly active in removing all odds 

 and ends from yards likely to contain water. Thirdly, 



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