16 



The air that supplies the House being properly prepared aud purified 

 enters e.ther by the ceiling or by the floor, according to Jhe arrangement 

 of the valves. The sketch No. 1, illustrates the progress of the air 

 from the ceding to the floor, and No. 2, shows the progress of the air 

 when the current is reversed, proceeding from the floor to the ceiling 

 52 Elses Patent Cylinder for Malt Drying, and Portable 

 KUnfarDrymg Corn and Seed, by which machine uniformity 

 of drv.ng, and the production of any shade of colour in the 

 mail ., n with certainty be effected; and manual labour on the 

 kiln IS wholly dispensed with. The malt can also be screened 

 while drying, and the whole of the malt-dust preserved uninjured 

 53. Drawings of a Planeing MacUne-a Self-acting Dril 

 Img Machine-and a Slide Lathe.-By Joseph Whitworth and 

 Co. Engineers, Manchester. 



54. Model of Lindley's Patent Bellows, working in an tip- 

 right frame, by means of a rack staff, a.vle, rod, Sfc. 



It consists of four boards, the second and fourth are fixed and kept a 

 certain distance from each other (according to the length of the stroke 

 required) by means ..f pieces of iron, the upper board rises and falls, the 



