ON THE ECONOMICAL USES OF FISHES. 199 



solved in caustic ammonia or bartsliom, and inject- 

 ed into hollow glass balls, with a minute aperture, 

 and of the requisite size and form, and after the 

 hartshorn has evaporated, the glass is left coated in 

 the inside with the pigment, which gives it a pearly 

 lustre. {Sometimes wax is poured in to render them 

 heavier, and complete the operation. 



In this country, of late years, the scales of the 

 perch, Perca vulgaris^ of the roach, Cyprinus rutilus^ 

 and a few others, have come into use with the fair 

 sex, being used by them in different kinds of fancy 

 work. 



Having now enumerated the principal species of 

 fish which, furnish food to man, or serve as objects 

 of commercial interest in this country, we may per- 

 haps be expected to make some general observations 

 on so important a subject. But this task has already 

 been accomplished by abler hands than ours, and for 

 information on this head it will only be necessary to 

 refer to Mr. Barrow's article on the "• Fisheries," in 

 the ninth volume of the Encyclopaedia Britannica. 

 In the mean while, we may state the conclusions he 

 arrives at, after viewing his subject in all its bear- 

 ings. 



Mr. Barrow considers the real cause of the back- 

 ward state of the British fisheries as simply arising 

 from the want of a steady demand for their produce, 

 and not, as has generally been alleged, from a defi- 

 ciency in the supply. He states, that the use of 

 fish is scarcely known in the interior, so that in the 

 inland and midland counties, " the labouring classes 



