The Technical World Magazine, Volume 10Technical World Company, 1908 |
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Page 615
THE PLACER MACHINE TAKEN APART AND READY TO BE PACKED WINGED APHID ON STALK OF WHEAT . Magnified. be accomplished within the same time , but the work is far more satisfactory , and more thorough . Further- more , and what is of the ...
THE PLACER MACHINE TAKEN APART AND READY TO BE PACKED WINGED APHID ON STALK OF WHEAT . Magnified. be accomplished within the same time , but the work is far more satisfactory , and more thorough . Further- more , and what is of the ...
Page 616
... APHID ON STALK OF WHEAT . Magnified SPRING GRAIN APHID - GREEN BUG " -- IN THE. lessens copper surface at least one - half , which is in itself remarkable as the pulp travels much further , in a spiral , than on the ordinary straight ...
... APHID ON STALK OF WHEAT . Magnified SPRING GRAIN APHID - GREEN BUG " -- IN THE. lessens copper surface at least one - half , which is in itself remarkable as the pulp travels much further , in a spiral , than on the ordinary straight ...
Page 617
... aphid , more widely known as the " green bug . " This spring grain aphid ( Toxoptera graminum ) is a tiny creat- ure , barely one - sixteenth of an inch in length . It is akin to the chinch bug and to all other members of the plant ...
... aphid , more widely known as the " green bug . " This spring grain aphid ( Toxoptera graminum ) is a tiny creat- ure , barely one - sixteenth of an inch in length . It is akin to the chinch bug and to all other members of the plant ...
Page 618
... aphids . The winter of 1906 - '07 and the spring which. WISP OF WHEAT LEAVES AND STALKS COVERED WITH " GREEN LIFELESS SHELL of " Green BUG . " SHOWING HOLE FROM WHICH HATCHED YOUNG OF PARASITIC WASP HAS EMERGED . APHIDS AS THEY AP- PEAR ...
... aphids . The winter of 1906 - '07 and the spring which. WISP OF WHEAT LEAVES AND STALKS COVERED WITH " GREEN LIFELESS SHELL of " Green BUG . " SHOWING HOLE FROM WHICH HATCHED YOUNG OF PARASITIC WASP HAS EMERGED . APHIDS AS THEY AP- PEAR ...
Page 619
... APHIDS , COMMON IN WHEAT FIELDS. APHIDS AS THEY AP- PEAR UPON WHEAT- LEAF FROM FIELD BADLY INFESTED BY THE PESTS . MICROPHOTOGRAPH OF FEMALE GRAIN APHID LAYING EGGS ,. within the past two years in Texas and Oklahoma , where it did much ...
... APHIDS , COMMON IN WHEAT FIELDS. APHIDS AS THEY AP- PEAR UPON WHEAT- LEAF FROM FIELD BADLY INFESTED BY THE PESTS . MICROPHOTOGRAPH OF FEMALE GRAIN APHID LAYING EGGS ,. within the past two years in Texas and Oklahoma , where it did much ...
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