INJURIOUS MANUFACTORIES. 125 



danger From them. INklefe the danger affects only the ma- 

 nufacturers tbemfelves, and by no means the inhabitants of the 

 neighbouring houfes, fo that a regulation enjoining thefe ma- 

 nufactories to bp lemoved out of towns and to a diftance from 

 any dwelling-houfe, would be an act of authority both unjuft, 

 vexatious, and injurious to the progrefs of manufactures, and 

 .in no refpect a remedy for the evils attending the operation. 



Some preparations extracted from animal fubftances require Catgut* 

 the putrefaction of thefe fubftances, as in the fabrication of 

 catgut; but it is more frequently the cafe, that animal fub- 

 ftances employed in manufactures are liable to putrefaction from 

 being kept too long, or expofed to too great warmth, as we 

 particularly find in dyeing cotton red, a procefs in which a Dyeing «ottoa 

 large quantity of blood is employed. The miafmata exhaled re * 

 by thefe putrid matters fpread far round, and form a very dtf- 

 agreeable atmofphere for all the neighbourhood to breathe; it 

 is the part of a good government, therefore, to caufe thefe 

 fubftances to be renewed fo as to prevent putrefaction, and 

 the manufactory to be kept fo far cleat), that no refufe of the 

 animal fubftances employed (hall be left to rot in them. 



In this laft point of view flaughter-houfes exhibit fome in- sraughter* 

 conveniencies; but they are not. of fuflicient importance to re- houfes. 

 quire them to be placed without the precincts of towns, and 

 affembled together in one fpot, as fp'eculative men are daily 

 propofing to government. A little attention on the part of 

 the magiftrate, to prevent butchers from throwing out the blood, 

 and refufe of the beafts they kill, would be fufficient to remedy 

 completely every thing difgufting or unhealthy arifing from 

 flaughter-houfes. 



Tiie fabrication of pmulreUe (night-foil dried) begins to be Poudretcr* 

 eftablifhed in ail the large towns of France, and the operation 

 by which ex( ..rementitious fubftances are reduced to this ftate, 

 neceffarily oecafions a very difagreeable fmell for a long time. 

 EftablMfaments of this kind therefore ought to be confined to 

 •airy place., remote from any habitation; not that we confider 

 the aeriform exhalations from them as injurious to health; but 

 no one can deny, that they are incommoding, noifome, dif- 

 agreeable, and difficult to breathe, on all which accounts they 

 ought to be removed to a dittance from the dwellings of men. 



There is a very important obfervation to be made on the Animal putr«. 

 Spontaneous decompoGtion of animal fubftances, which is. feaio »\ danger- 



* ous only in pro« 



5 that portion to ita 



humidity. 



