Miscellaneous Intelligence. 79 
of a horse of the reserve cavalry, 1:0166 gr.; of a cow, 1°365 gr. 
In vertebrates the quantity of iron does not exceed a thousandth 
of the weight ; in invertebrates, probably not four ten-thousandths. 
It is usual to attribute the red color of the blood to the presence 
of iron. Yet the white blood of invertebrates contains almost as 
much iron as the red of vertebrates. Also, plants not green, like 
mushrooms, contain as much iron he green plants. Boussin- 
gault concludes that of all substances the blood is that which con- 
tains the largest amount of iron, and of assimilable iron, since it 
has already been assimilated.—Acad. Sci. Paris, May, 
Mondes, June 6. 
3. Prismatic bows on the surface of the Lake of Geneva.—On 
February 11, between two and three o’clock, M. Elie Wartman 
observed two concentric bows with the colors of the rainbow on 
regularity ; and so vast was the quantity, that the current of the 
Rhone took several days to carry it ott. —Z’ Institut, June 5, 
esnut tree ( Castanea vesca).—Mr. ©. pv’ ErrincsHausEN 
hay & recently been met with in the a vesca of the pres- 
et time, and hence he concludes that the latter is a descendant 
om the former,— iss. Wien, Feb., 187 
5. Ueber krystallinischen Hagel im thrialethischen Gebirge, und 
Uber die Abhingigkeit der Hydrometeore von der Physik des 
hail of the Thrialeth mountains in the Caucasus, is a part o 
Work entitled “Materialen zu einer Klimatologie des Kaukasus, 
Pages to these subjects. It then describes a large number of hai 
at occurred in the region, giving careful statements as to 
8 
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