employed the first equipment, with anywhere on inland waters, the understanding ‘that and for several years had should the Carnegie Institu- the greatest capacity of any tion decide to establish a of the Mississippi suction solar observatory of _ its machines. The dredge real- own, this should take… … sign. The operation of the inches diameter. The dis- shop is not confined to the charge is of the enormous construction of the me- size of 33 inches, and the HYDRAULIC SUCTION DREDGE ON THE MISSISSIPPI. chanical parts of the instru- suction 3334 inches in diam- ments; provision is also made for…
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