•^96 A VISIT TO THE GREAT EXHIBITION.. 



Solen enses, ]\Iya arenaria.) Mussel (Mytilus edulis, and Modiola Ameri- 

 cana.) Whelk, Buccinum undatum, Fuses decemcostatus, and F. Islandicus.) 

 Periwinkle, (Littorina littorea.) 



Crustacea. — The most important species found in Nova Scotia, and the 

 only one exhibited, is the Lobster (Homarus Americanus.) It is found in 

 enormous quantities, on every part of the coast. It is stated that not less 

 than a million dozen of Lobsters are annually disposed of, at or in the 

 vicinity of Halifax, for exportation or domestic use. Along the Northern 

 coast of Nova Scotia they are thrown up in such quantities by gales that 

 they are used extensively for manure. Their price in the market in Halifax 

 is generally about Id. each. Occasionally, however, there has been so large 

 a supply, that a wheelbarrow-full has been sold for Is. 



A case is exhibited by J. R. Willis, Esq., containing several specimens. 

 The most interesting feature of the collection is an enormous claw, about 

 15 inches long, which belonged to a lobster 30 inches in length, and of 

 almost the same dimensions from point to point of extended claws. 



Pearls. — A large quantity of Pearls have recently been found in the 

 fresh water Bivalve Alasmod Margaritijera, in streams and lakes of Anna- 

 polis, and King's County, and are apparently abundant. ] 5 selections are 

 exhibited, from contributions by the following persons : Wm. Mclntyre, 

 Job Randall, E. J. McNeill, Thaddeus Walker, Wallace Kirkpatrick, 

 Austin Woodberry, and Joseph Grogan. In the pearl case are animals with 

 corresponding valves, preserved in alcohol, by J. R. Willis. 



A VISIT TO THE GREAT EXHIBITION OF 1862. 



BY THOMAS D. ROCK. 



Amidst the bewilderment produced by multitude and variety, an occa- 

 sional paper on some of the more prominent technological attractions at the 

 Great Exhibition will, doubtless, prove acceptable, and more especially to 

 those readers of the Technologist who, from unavoidable hindrances, are 

 compelled to absent themselves from the great Industrial Museum. The 

 notes which I propose to make, as opportunity occurs, will also serve as a 

 register of many objects, and products of interest, which may possibly escape 

 the notice of other periodicals less specially devoted to industrial science. 



Class IV., where will be found the British collection of raw and manu- 

 factured products of two out of the three kingdoms of nature (Animal and 

 Vegetable substances used in manufactures), unfortunately occupies, in 

 common with Classes 1, 2, and 3, a very undesirable site, and the Eastern 

 Annexe itself, in which these classes are placed, is a miserable structure, 

 neither air nor water tight, and altogether unworthy of the many valuable 

 specimens there exhibited. This class is, notwithstanding the drawbacks 

 of situation and shelter, well deserving of a visit from the public, and I 

 feel quite persuaded that no intelligent mind will fail to derive great satis- 

 faction and advantage from a careful inspection of its contents ; which are 



