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Caxar/es a.vd Cage-Birds. 



functions ; but we do not consider the phenomenon results from any such cause, but is a most 

 perfect and healthy recognition of certain laws in the animal economy. 



We furnish an illustration of the interior of Mesars. Mackley Brothers' moulting-room at 

 Norwich — the most complete thing of its kind in the countr}^ The " room" is a detached house 

 in Mr. Jacob Mackley's garden, at Upper Hellesdon, on the outskirts of the city, and is a wooden 

 erection about twelve feet high, standing on six substantial posts about two feet six inches from 



MESSRS. MACKLEVS MOULTING-k 



the ground. It is weather-boarded on the outside with one-£.nd-a-quarler-inch stuff, and the space 

 between that and the three-quarter-inch boards with which the inside is lined is filled with sawdust, 

 which acts as a non-conductor. It is warmed by hot-water pipes, and the perforated covering 

 seen at the bottom is contrived so as to admit fresh air from outside as well as the heated 

 air from the pipes. The entrance consists of double doors, the rule being to close the outer 

 before opening that immediately leading into the room, in case any birds should have escaped 

 from their cages. It is lighted from the roof, and is well ventilated by means of six patent 

 contrivances, and lighted by gas, the foul air being carried off by a four-inch pipe through the 

 roof, which is tiled. There are 248 cage-compartments, separated by sliding partitions, the 



