THE SO-CALLED REMOVAL OE THE LAMPAS. 
523 
metallic lustre : “ These small renal calculi occur in greater 
numbers, and more frequently, than the white uneven ones or 
the uneven calculi with a mother-of-pearl lustre. Their size 
is not considerable ; they vary from that of a poppy seed to 
that of a pea. The colour of the polished surface is of a 
greenish metallic lustre, which gives them much resemblance 
to pills that have been gilt over.” It is perhaps the bronze 
colour he refers to here which these bodies sometimes 
possess. 
“ On being cut through, they present a stratiform arrange- 
ment, and a small grain (nucleus) consisting of the same 
mass, each of these layers are thin and transparent, and 
measuring 0*007 of a line in thickness. The specific gravity 
of these calculi is 2*301.” Their chemical composition is 
as follows : 
Carbonate of Lime . . . . .84*8 
Carbonate of Magnesia .... 10'0 
Carbonate of the Oxide of Iron . . . 0 6 
Organic Matter . . . . . .1*6 
Water and Loss 3*0 
100-0 
Fiirstenberg, like Mazza, ascribes the metallic lustre to the 
carbonate of iron. 
16, Upper Woburn Place. 
ON THE REMOVAL OF THE LAMPAS SO-CALLED. 
By “Poulain.” 
Messrs. Editors, — I would, for a brief space, claim your 
attention to an operation, which, in the present state of 
veterinary science, ought only to be remembered as a piece 
of barbarism, coeval with the days of empirical farriery ; I 
mean that of taking out the lampas, unlampassing, or re- 
moving the skew, as I have heard it variously termed ; which 
scientific operation I have recently seen performed in several 
instances, and I am, therefore, of opinion that the custom is 
much too common, even at this time, in many parts of the 
country. As it is well known in the profession, and by many 
others, to be a most unsurgical and cruel practice, I am some- 
what surprised that the operation has not long ago fallen into 
that merited oblivion which has closed over drawing of the 
