ON ALTERATIONS OF THE BLOOD. 
291 
good food will generally effect a cure. Perhaps, even at a more 
advanced stage, indicated by infiltration of the mucous mem¬ 
branes, there may he a possibility of saving the animals. The 
leaves of trees that retain their verdure during the year, the lime 
and the cedar, associated with good and wholesome food, will ge¬ 
nerally produce a salutary effect. Under the influence of this 
treatment the quantity of serum will diminish, the fibrine and the 
albumen will increase, but the colouring matter will remain nearly 
the same. 
Chemical analysis having demonstrated that iron forms the base 
of the cruor, it was natural to endeavour, by ferruginous prepara¬ 
tions, a method of restoring the blood to its natural colour. M. 
Delafond advocates the sulphate of iron, which had been employed 
as early as the days of Chabert. Under the influence of this me¬ 
dicament the blood has almost always regained its natural colour, 
and the hydrohemia has disappeared. It is useless to say that this 
treatment will fail when the disease has attained its last stage, for 
such an affection will then necessarily bid defiance to the resources 
of art. 
The pathognomonic symptoms of this disease—the state of the 
blood—the slow march of the malady—and the lesions which it 
produces, all prove, according to our author, that the impoverish¬ 
ment of the elements of the blood and the predominance of the 
serum, are the primary and essential causes of hydrohemia. 
[To be continued.] 
REVIEW. 
Quid sit pulchrum, quid turpe, quid utile, quid non.—Hon. 
A Natural History of Quadrupeds and other Mammiferous Ani¬ 
mals, comprising a Description of the Class Mammalia, includ¬ 
ing the principal Varieties of the Human Race. By WILLIAM 
Charles Linnaeus Martin, F.L.S., with upwards of 1000 
engravings, &c. Whitehead and Co., Fleet-street, London. 
Such is the title of a new zoological work, publishing in monthly 
parts. Part the First appeared in February last; and if we might 
be allowed to judge of its merits b}' this introductory number, we 
should consider it well adapted to supply an evident deficiency in 
one department of zoology at least; as it purposes to embody, in a 
