[ ti60 ] 



shavings of the currier, furriers' clippings, and the 

 offals of the tan-yard and of the glue-maker. The 

 gelatine contained in every kind of skin is in a state 

 fitted for its gradual solution or decomposition ; and 

 when buried in the soil, it lasts for a considerable 

 time, and constantly affords a supply of nutritive mat- 

 ter to the plants in its neighbourhood. 



Blood contains certain quantities of all the princi- 

 ples found in other animal substances, and is conse- 

 quently a very good manure. It has been already 

 stated that it contains fibrine ; it likewise contains al- 

 bumen : the red particles in it which have been sup- 

 posed by many foreign chemists to be coloured by 

 iron in a particular state of combination with oxygene 

 and acid matter, Mr. Brande considers as formed of 

 a peculiar animal substance, containing very little 

 iron. 



The scum taken from the boilers of the sugar 

 bakers, and which is used as manure, principally con- 

 sists of bullock's blood, which has been employed for 

 the purpose of separating the impurities of common 

 brown sugar, by means of the coagulation of its albu- 

 minous matter by the heat of the boiler. 



The different species of corals, cor alines 9 and 

 sponges, must be considered as substances of animal 

 origin. From the analysis of Mr, Hatchett, it appears 

 that all these substances contain considerable quanti- 

 ties of a matter analogous to coagulated albumen ; the 

 sponges afford likewise gelatine. 



According to Merat Guillot white coral contains 

 equal parts of animal matter and carbonate of lime : 



