. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 198.—Lucas Sounding Machine, Hand-driven. (FromKrummels Handbuch der Ozeanographie, by per-mission of J. Engelhorns Verlag, Stuttgart.). Fig. 199.—Sounding-Leads, with Snapper for Collecting aBottom Sample. (Lucas Snappers.) The lower lead has a weight which is detached on striking thebottom. which can be swung inboard when the gear is up, inorder to enable the instruments to be convenientlyattached and detached. Lighting.—If there is a dynamo on board, a cargocluster, with ename
. Science of the sea. An elementary handbook of practical oceanography for travellers, sailors, and yachtsmen. Fig. 198.—Lucas Sounding Machine, Hand-driven. (FromKrummels Handbuch der Ozeanographie, by per-mission of J. Engelhorns Verlag, Stuttgart.). Fig. 199.—Sounding-Leads, with Snapper for Collecting aBottom Sample. (Lucas Snappers.) The lower lead has a weight which is detached on striking thebottom. which can be swung inboard when the gear is up, inorder to enable the instruments to be convenientlyattached and detached. Lighting.—If there is a dynamo on board, a cargocluster, with enamelled iron shade and flexible con- LABORATORY 283 nection, is very useful for working at night. Heavynets should never be shot at night until the wholecrew is thoroughly well practised in the use of thegear ; a man can easily lose his life by getting a turnof the warp or spans round his leg. A portable electric torch is very useful for reading the log,etc., at night. C.—Laboratory Fitting. Some sort of place will have to be used as a labora-tory, where the scientific log can be written, collectionspreserved, labelled, and packed, etc. ; so that a fewnotes may be here added on fitting it up as a laboratory. It is perfectly possible, by a li
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectocean, bookyear1912
