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stance similar to albumen, united to gelatine. 
This is shown by the ingenious researches of Mr. 
Hatchett. The theory of their operation is similar 
to that of bone and horn shavings. 
The refuse of the different manufactures of skin 
and leather form very useful manures ; such as the 
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 consider- 
able time, and constantly affords a supply of nutri- 
tive matter to the plants in its neighbourhood. 
Blood contains certain quantities of all the prin- 
ciples found in other animal substances, and is 
consequently a very good manure. It has been 
already stated that it contains fibrine ; it likewise 
contains albumen : the red particles in it which 
have been supposed by many foreign chemists to 
be coloured by iron in a particular state of combin- 
ation 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 
consists of bullocks’ blood, which has been em- 
ployed for the purpose of separating the impurities 
of common brown sugar, by means of the coagu- 
lation of its albuminous matter by the heat of the 
boiler. 
The different species of corals , cor alines, and 
sponges , must be considered as substances of animal 
origin. From the analysis of Mr. Hatchett, it 
