176 
MISCELLANY. 
polish, and an appearance of facettes. In size they are nearly similar to 
the oil-globules; but if the milk be examined some lime after it is drawn, 
a number are found much larger — l-50th of a line or even more in diame- 
ter. They are not so easily soluble in ether as the common milk-globules; 
they do not break up in drying, but they become clearer; acetic acid and 
ammonia have no influence upon them; they diminish for a time when the 
milk is boiled, but they re-appear gradually as it cools again; when left at 
rest, they collect on the surface and form the cream; they easily stick to- 
gether, and butter is formed when they are collected in one homogeneous 
mass. It is evident that they acquire their peculiar characters after they 
they are drawn from the gland-ducts; for the author, as he watched them 
on the field of the microscope, could see individual globules which were 
originally clear, becoming on a sudden quite dark, and assuming the seve- 
ral characters of the cream- globules. 
The yellow granulated corpuscles are almost peculiar to the colostrum ; 
after the first few days from delivery, they cease to occur in the milk, and 
they disappear from it earlier in those who have borne several children 
than in primitive parse. They are not all spherical; the majority are flat* 
Their diameter is at most from l-200th to l-100th of a line; some are 
found measuring l-50th in length and l-75th in breadth. They consist, 
of small clear globules of fatty matter, which are connected together by a 
firm cement, which is unalterable by either ammonia or concentrated acetic 
acid, or by boiling. When the milk is left at rest, these globules collect 
on its surface; and, when they exist in considerable numbers, render it 
unfit for making butter. The author believes that they are not, like the 
preceding globules, formed by the action of the air; but that they are pro- 
duced by the secreting surface of the gland-ducts, and are analogous to 
the mucus-cells which are cast off from the surfaces of many mucous 
membranes, and to which they are in many respects very similar. 
Mullens Archiv. 
