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rots, potatoes, &c., sugar was found in the blood of the right side of the 
heart, and in equal quantity in the blood taken from the carotid. 
4th. In three rabbits fed on vegetables, sugar was found in the blood 
of the right side of the heart, drawn during life ; but double, and in one 
instance more than treble the amount, was found in the blood sucked 
from the same locality after the animals were killed (one by pithing, two 
by hydrocyanic acid). 
Hence one seems in some degree justified in concluding that in ve- 
getable-eating animals the blood is normally saccharine, but that the li- 
ver does not appear during life to form and pour out into the blood of 
the hepatic vessels sugar specially derived from the transformation of the 
amyloid substance into that material. 
The fact that fibrine is deficient in the blood leaving the liver, does 
not militate against the view that the amyloid substance is a matter in 
progress of assimilation towards becoming an azotized material; it may 
lead to the supposition that the fibrine is destroyed in the liver by part- 
ing with some of its nitrogen to combine with the ternary compound. 
Lastly, has the liver the special privilege of making, to the exclusion 
of other organs and tissues, the amyloid substance of the first species ? 
It is now satisfactorily known that it has not: and the facts recently 
brought forward upon this point are, perhaps, the most conclusive evi- 
dence which can be offered that this amyloid substance is related to the 
tissues in which it is found rather as a reparative material, or proto- 
plasma, than as one formed for special transformation into sugar. 
Amyloid substance of the second species has been found in various 
forms, widely diffused throughout the animal organism, either as normal 
or morbific deposits ; in the form of tunicine, identical in composition 
with cellulose uncombined with azote ; as chitine consisting of cellulose 
in union with a proteic compound, it has been caused to ferment by Ber- 
thelot ; while, as met with in the prostate, spleen, choroid plexus, and, 
in what is known as amyloid degeneration of many organs, it has as yet 
resisted all attempts to change it into fermentescible sugar. This, pro- 
bably, is on account of its intimate admixture or chemical union with 
azote, and the analogy, therefore, comes to be striking between this 
matter and the azotized fats of nervous centres (cerebrine). 
It is,,however, the existence of the first species of amyloid substance 
in other organs and tissues than the liver to which the present question 
refers, and with regard to which the following facts are before us :— 
. 1st. Amyloid substance (of the first species) of Bernard, is abundant 
in the liver: much more so in animals fed on saccharine and amyla- 
ceous food than in those fed on meat—diminishing rapidly in quan- 
tity in the livers of animals not fed at all for some days, except in the 
case of hybernating animals, when it is found in quantity many days 
after the animal is asleep. 
2nd. It is found in the placenta, most plentiful, about the third and 
fourth months of utero-gestation. 
érd. It exists in the lung and muscles of the feetus, as well as in the 
epithelial cells of the skin, respiratory and digestive organs. 
