254 MADRAS FISHERIES BULLETIN VOL. XIII, 



pressed and the oil skimmed off. Unless the factor}- owner can 

 satisfy the President of the Taluk Board that such water can be 

 used without offence as a fertilizer for coconut trees in the vicinity, 

 it must be carried by a drain either to a point on the beach just 

 below low water mark or into the backwater or stream as the case 

 may be. 



9. Such drain must be constructed of glazed earthenware pipes 

 not less than 4 inches in diameter. 



10. The pipes must be laid at such a slope that the waste 

 water shall pass through them rapidly to a proper outfall. 



11. The floor of the factory must be flushed daily with water 

 when manufacture is going on and arrangements must be made to 

 the satisfaction of the President of the Taluk Board for such 

 water to escape into the waste water drain. 



12. When manufacture is in progress the floor pits and drains 

 of the factory must be disinfected at least twice a week with 

 chloride of lime or some other disinfectant approved by the 

 President of the Taluk Board. 



13. The factory premises must be kept clean and free from fish 

 scales or refuse and other organic matter. Effluent water must not 

 be allowed to soak into the soil in the vicinity of the factory 

 buildings. 



14. Arrangements must be made for the provision of an ample 

 supply of fresh or sea water for cleaning purposes. If no well is 

 provided the water must be stored in casks or other suitable 

 receptacles in the factory yard to the satisfaction of the President 

 of the Taluk Board. 



15. Factory owners shall allow their factories to be inspected 

 by the President, Taluk Board, or any person authorized in writing 

 by him to inspect such factories. 



from thd effluent ivuich hccoi/ies co)iipnratively harmless, and the straw itself is converted 

 into manur:. At WainHeet this method has been applied, with most promising results, 

 to (leal with the sewage from a camp of some 200 men." 



The lecturer subsequently pointed out that the sewage must so trickle over the straw 

 that there should, at the same time, be plenty of air passing through the straw filter with 

 the sewage. Probably this would be eflected by a somewhat loose packing of the straw 

 in a maso.iry or other cistern, divided into several connected chanibers by vertical 

 partitions but communicating one with the other, so that the fluid should traverse a 

 considerable length of straw fdier before its discharge ; this would also prevent undue 

 massing of the wet straw. 



It would seem therefore that no serious diflicully should be found in minimizing nui- 

 sance or improving the use of effluent water, il the problem is attacked with intelligence 

 an5 attention. 



