The National Geographic Magazine, Volume 74National Geographic Society, 1939 - Geography Indexes kept up to date with supplements. |
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Page 466
... eggs , and then to release them from the sand . The tides accompanying the new moon , when the eggs are ready to hatch , are higher than the usual tides , as are those ac- companying the full moon . The surf smelt , or silver smelt ...
... eggs , and then to release them from the sand . The tides accompanying the new moon , when the eggs are ready to hatch , are higher than the usual tides , as are those ac- companying the full moon . The surf smelt , or silver smelt ...
Page 484
... egg - laying a crevice in the reef or a position between two large bowlders ten feet or more below the surface . Occasionally a mass of eggs is laid above the low tide level , but these eggs spoil from exposure . They are whitish with ...
... egg - laying a crevice in the reef or a position between two large bowlders ten feet or more below the surface . Occasionally a mass of eggs is laid above the low tide level , but these eggs spoil from exposure . They are whitish with ...
Page 826
... eggs , and they were all males . So it was safe to assume that the unfertilized eggs of this wasp pro- duced males only . Among yellow jackets , parthenogenesis takes place only in the event of the acci- dental death of the queen ...
... eggs , and they were all males . So it was safe to assume that the unfertilized eggs of this wasp pro- duced males only . Among yellow jackets , parthenogenesis takes place only in the event of the acci- dental death of the queen ...
Contents
GuamPerch of the China Clippers By MARGARET M HIGGINS | 99 |
A Motor Caravan Rolls Across Sahara and Jungle Through Realms | 327 |
Boyhood Recollections and Recent Observations by An American | 419 |
Copyright | |
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