I'GS PROCEEDINGS OF SECTION H. 



inconvenience avouIcI arise from the exit of the air at the 

 outlets provided at the floor level. 



The possibilities of cooling, warming, moistening, drying, 

 screening, or medicating the incoming air are of course as 

 great when the air is forced in at the ceiling as when forced 

 in at any other part, but for all these purposes the downward 

 system presents the advantage of greater certainty of action 

 for the same reason as for the purpose of prevention of 

 draught. 



The advantages, therefore, which the downward system 

 presents when the fresh air is forced in by a centrifugal fan 

 at the ceiling level are, it appears to me : — 



1st. A perfect diffusion of the fresh air to all parts of the 

 room. 



2nd. A complete changmg of the air of the room without 

 inconvenience to the occupants. 



3rd. A considerable lessening of the inconvenience and 

 danger arising from draughts. 



4th. A certainty of action in regard to the preparation of 

 the fresh air to suit the comfort of the occupants. 



5th. A system in inirmony with the existing mode of 

 wanning and ventilating hy means of the open fireplace. 



6th. A system in harmony with the natural laws operating 

 during the summer months when perfect ventilation is most 

 urgently needed. 



8,— THE SEWERAGE OF A SEASIDE TOWN. 



By A. MAULT, 



Enffinrrring Insprctor to the Central Board of Health of Tnsnmnia ; one of 

 the Vicp-Presidents of the Em/meerlnf/ Sretloii of the Seventh International 

 Coiifjrens of Hygiene and Demography, London, 1891. 



The system of sewerage to be recommended for adoption 

 at any place naturally very much depends u])on its circum- 

 stances. And one of the most important of the circumstances 

 that aftect the decision to be come to in the matter is that of 

 the position and relation of the place with respect to the 

 natural outfall of its sewage. If the outfall of an inland 

 town be into a river that, further down in its course, is the 

 source of the water supply of a district, a system must be 

 adopted that will not interfere with the purity of that supply. 

 If the town be on tlie seaside, at a place where there is a 



