. Report. q^^shells, and to do this the sporulating dishes had to be taken outof the pan for examination under a low-power microscope Plate No. 2g. Floatini^- Docks. Method of testing the hatching of different batches of ^%giunder identical conditions. Objections to this method were (i) that the eggs had to becompletely submerged, and it has been stated, b\ Goeldi (seeCarnegie Monograph, Mosquitoes of North America, page 282), thatcontinued submergence kills the ^. Death rate from this causeis not b} any means obvious in some of the experiments, butwhere aiiy mortalit}- at al
. Report. q^^shells, and to do this the sporulating dishes had to be taken outof the pan for examination under a low-power microscope Plate No. 2g. Floatini^- Docks. Method of testing the hatching of different batches of ^%giunder identical conditions. Objections to this method were (i) that the eggs had to becompletely submerged, and it has been stated, b\ Goeldi (seeCarnegie Monograph, Mosquitoes of North America, page 282), thatcontinued submergence kills the ^. Death rate from this causeis not b} any means obvious in some of the experiments, butwhere aiiy mortalit}- at all has occurred, it is impossible to provea negative. (2) Great care had to be taken in removing andX 178 returning the small dishes to the large pan, in order to avoidscattering the eggs and mixing them. (3) The gradual accumulationof dirt and organic growth tended to obscure a free view of theeggs after two or three weeks immersion. An alternate method was devised of keeping the eggs in smallfloating docks (see Plate No. 29, page 177) with a fine gauze bottommade as follows. The top is taken out of the lid of a willow chip box,and the hoop
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondon, bookyear191
