173 



the building by passing into the right hand pipe at D up past E and 

 into the stable at F at the ceiling. It circulates through the build- 

 ing, enters the outlet at A, passes up through B and out at C. Tf 

 the wind were blowing from the left, however, it would enter at X 

 up through B and out into the stable at Y finding its way out by 

 entering the right hand tube at D and passing up through E and 

 out at B, 



Bad Wall Construction 



TWO-PIY IncH LUMBER, PAPER BETWEEN. 

 Plait E- Modified Kin0 System 



H J L N represent barriers or trap doors hinged at G I K and 

 M respectively. As set in diagram, air enters by D E F and dis- 

 charges by A B C. If set as per dotted lines, then entry would be by 

 X B Y and discharge by D E B. 



When properly attended to this is an exceedingly satisfactory 

 system, but when neglected does not always work well. If desired, 

 trap doors II J L U may be arranged so as to permit of air entering 

 directly, that is by flowing through X A and D D and leaving: the 

 stable at ceiling that is B and Y C, which would be a modified 

 Rutherford system. This latter modification works well in warm 

 weather. 



MUSLIN CURTAIN VENTILATION SYSTEM. 



Muslin curtain ventilation, a so-called system of ventilation 

 advocated to a considerable extent in recent years, was given a 

 thorough trial at the Central Experimental Farm and found quite 

 unsatisfactory. The most striking faults with the system were: 



1. Too great watchfulness necessary to insure even a fair measure 

 of siuccess. 



