606 
REMAKES ON COMPOSITION OE THE BLOOD. 
w hen the vessel full of milk is thus covered, the decree of 
dilution possessed by the sample under examination is esti¬ 
mated bv the number of degrees on the enamel which 
can be read through the glass cover; for the glass being in 
contact with the edge of the enamel plate at one end, 
and separated from it by a gradually increasing interval 
towards the other, the intervening stratum of milk is made 
to assume the form of a thin wedge. If the fluid under 
examination be of a rich quality, abounding in oily 
and caseous particles, it will possess such an amount of 
opacity that only a few d egrees can be discovered on the 
subjacent enamel when the instrument is held opposite to 
the light. If, on the contrary, the specimen be of inferior 
quality, whether from innate poverty or the admixture of 
water, the diminution of opacity thence residting will be 
evinced by the enamel scale becoming visible through a 
deeper part of the fluid, or at a greater distance from the 
commencement of the scale; the degree of translucencv, 
therefore, can be measured by the number of lines visible 
through the fluid.— Lublin Medical Pues-s and Chemical News . 
REMAflKS ON THE COMPOSITION OF THE BLOOD, AND 
PRINCIPALLY WITH REFERENCE TO THOSE DISEASES 
OF CATTLE AND SHEEP IN WHICH THE FLUID UNDER¬ 
GOES IMPORTANT PATHOLOGICAL CHANGES. 
By James Beart Simonds. 
In a lecture on the structure and diseases of the organs of 
respiration and circulation, published in the Society’s Journal, 
vol. x, page 570, et seq some observations were made by me 
on the component parts of the blood, several of which it will 
be necessary to repeat here, with a few additions, for the sake 
of unity and completeness. In the present paper, however, 
it will be my aim to avoid as much as possible entering on 
disputed points of the physiology of the fluid and of the 
several assigned causes of the changes it undergoes under 
ordinary circumstances both within and without the vessels. 
To attempt this would draw me from the practical object I 
have in view, and perhaps render the paper less attractive to 
the majority of the readers of the journal. 
The slightest reflection on the organization of an animal 
body will suffice to show that it is composed of solid and 
fluid parts. It is not, however, so well known that the circu- 
