318 
PHARMACEUTICAL MEETING. 
itself, whether these multitudes of fish, retiring as they do from one and 
appearing on the opposite side of a great ocean at definite and exact inter¬ 
vals, may not be composed of the same individuals moving in prodigious num¬ 
bers and probably in detached shoals, urged by a powerful instinct to pursue 
systematic and periodical migrations,—to the East for the purpose of propaga¬ 
tion, and to the West in pursuit of food. 
Mr. Martindale had observed in the Norwegian Pharmacopoeia that the 
livers of several species of codfish were allowed to be used in the preparation 
of the oil. 
Mr. Howden said that was the case in the existing Pharmacopoeia, but the 
Government had commissioned two gentlemen, of whom M. Moller was one, to 
prepare a new Pharmacopoeia ; and, he might add, that the model which had 
been placed before them was the new British Pharmacopoeia. 
Mr. Brady said there were one or two points on which information was desir¬ 
able ; the first being as to whether there was a different specific action in the oil 
obtained from the livers of different kinds of fish. In some places,—and he could 
speak particularly of the fishing villages in his own neighbourhood in the north,— 
ling-liver oil was asked for, and cod-liver oil refused. In some places the livers 
of the ray, skate, and ling were used indiscriminately in the manufacture of oil, 
but how much of the product came into the market as cod-liver oil he had no 
means of knowing. Another point on which he should be glad to hear an ex¬ 
pression of opinion from those who had had practical experience in the manu¬ 
facture of the oil was, as to whether any filtration was requisite in the case of 
