. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 496 PETER DOVDOROFF and } with several perforations, so that no horizontal currents passing from one compartment to another were present. Sea water heated or cooled to a high, a low, and an intermediate temperature first flowed through three large tanks in which it was vigorously aerated with com- pressed air. From the aeration tanks the water was distributed to the k 6 / ^x •* J \ / wj£- -x^ 7 \ A ^ iii x \u u ^^s l \ /<< •%• -Outlet from \ next aeration tank 1 ~D~ C FZJ- Cl POl .£?.. w Tw" Tw" Tw
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 496 PETER DOVDOROFF and } with several perforations, so that no horizontal currents passing from one compartment to another were present. Sea water heated or cooled to a high, a low, and an intermediate temperature first flowed through three large tanks in which it was vigorously aerated with com- pressed air. From the aeration tanks the water was distributed to the k 6 / ^x •* J \ / wj£- -x^ 7 \ A ^ iii x \u u ^^s l \ /<< •%• -Outlet from \ next aeration tank 1 ~D~ C FZJ- Cl POl .£?.. w Tw" Tw" Tw" "T| • I o •»• • fl ° •» • B ° •*• • B • B •*"° I. ».'»> n)» »n tyu}j}}?}n»ilt?.".'"." '>JJJ. Comp 8 9 10 FIG. 1. Diagram of the gradient tank. ^—Top view of a portion of the tank (Compartments 9 and 10). B—Cross-section through the tank (Compartment 2) and hood. C—Longitudinal section through the entire tank, showing arrangement of inlets and outlets. Cross-sections of outlet tubes are indicated by solid circles and inlet tubes by open circles. The relative temperature of the inflowing water is indicated above each inlet tube: W = warm, / = intermediate, C = cold. Dummy tubes are not indicated. a, b, and e are partitions; p—opening between compartments; .?—horizontal screen; h—hood; d—door of hood, o—observation slit, g—lamp; —inlet tubes ; —outlet tubes, —dummy tube, t—air trap, v—screw-clamp, n—hood over outlets, k—water level. gradient tank through 14 tubes, each of which was provided with a trap (/) to remove air bubbles and a valve (v~) for regulating the flow. In every case water at a higher temperature than that maintained in any given compartment was introduced into it at the bottom (below the screen), while colder water was introduced at the surface. Dummy. Please note that these images are extracted from scanned page images that may have been digit
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
