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prevent sewage gases gaining access to the houses. How- 

 ever, it is to be feared many of the so called traps are traps 

 to catch and transmit disease, and not to stop it. He had 

 himself, at his residence in Crumpsall, a drain from a sink- 

 stone communicating with the sewer, and for the last few 

 years it had acted moderately well, except during sudden 

 falls of the barometer, when smells would get into the house 

 in spite of the traps. During the past summer a servant 

 having found some sewage gases escaping into the yard 

 from the eyes communicating with the sewer, trapped them. 

 When he (the President) returned home last autumn he 

 found the yard quite free from smells, but his house full of 

 them, the traps in the yard having forced them inwards. 

 No time was lost in cutting the pipes communicating with 

 the sewer, so as to allow the refuse water to discharge itself 

 into the open air and fall into a stench trap communicating 

 with the sewer. This has effectually stopped all smells 

 from sewage gases entering his house. The connection of 

 of house drains with main sewers is no doubt a fertile 

 source of disease, and in some cases even tlie means of 

 transmitting it from house to house. 



Mr. Richard Weaver, Sanitary Engineer and Chemist, 20, 

 Nile Street, Leicester, had lately informed him that he (Mr. 

 Weaver) had some seven months ago visited Sunderland, 

 then suffering from a smart attack of small-pox. The 

 sanitary officer and chairman of the Health Committee 

 stated that the sewers had excellent ventilation. This 

 excellent ventilation consisted of six openings into chimney 

 stacks, for the most part at the lower extremites of sewers. 

 Now, until the fallacy was pointed out, the responsible 

 authorities considered six openings, promiscuously selected, 



