SEED-KILNS. 



677 



closed if required ; fresh air is supplied by the vent-holes 

 (o, o, o). 



This simple apparatus may be taken as a type of numerous 

 private seed-husking establishments, as those of Geigle at 

 Nagold, Keller and Appel at Darmstadt, Steiner's in Wiener- 

 Neustadt, etc. The frames supporting the trays are made of 



Fi.tr. 364. Seed-kiln with fixed trays. 



iron ; four large stoves in the lower story supply the hot air. 

 Numerous openings with valves regulate the temperature. 



(b) Fixed Trays. Fixed trays are used in buildings with 

 several storeys ; the heating-apparatus being on the ground- 

 floor, above which are two or more drying-chambers. The 

 floor of each of these is of grating (in the newest establish- 

 ments of the kind, of thick iron wire, in the older ones of 

 wooden bars), but close enough to allow only the seed and not 



