...the processes therein concerned. Viewed in this way, the different broods or colonies of Aphididae cannot be said to constitute as many true generations,...constitute as many trees ; on the other hand, the whole suit, from the first to the last, constitute but a single true generation. I would insist upon this...

...organs, no ovaries nor oviducts. These viviparous individuals, therefore, are simply gemmiparoiis, and the budding is here internal, instead of external,...constitute as many trees ; on the other hand, the whole suit, from the first to the last, constitutes but a single true generation. I would insist upon this...

...highest, both physiological and zoological, interpretation that can be advanced for these pli;<-nomena which Steenstrup has so ingeniously collected and...constitute but a single true generation. I would insist upcthis point as illustrative of the distinction to be drawn between sexual and gemmiparous reproduction....

...the morphologies I pecularities of oviparity ; but all these dissimilar conditions are oeconomical and extrinsic, and do not touch the intrinsic nature...constitute as many trees ; on the other hand, the whole suit from the first to the last constitute but a single true generation. I would insist upon this point...

...the processes therein concerned. Viewed in this way, the different broods or colonies of Aphididae cannot be said to constitute as many true generations,...different branches of a tree can be said to constitute aa many trees ; on the other hand the whole suite, from the first to the last, constitute but a single...

...viviparous Aphides are sexless ; they are not females, for they have no proper female organs, no ovaries nor oviducts. These viviparous individuals, therefore,...constitute as many trees ; on the other hand, the whole suit, from the first to the last, constitutes but a single true generation. I would insist upon this...

...particularly those of Owen and Steenstrup, showing they are all untenable, Dr. Burnett continues : — " Viewed in this way, the different broods of Aphides...hand, the whole suite, from the first to the last, constitutes but a single true generation. I would insist upon this point as illustrative of the distinction...

...the processes therein concerned. Viewed in this way, the different broods or colonies of Aphididse cannot be said to constitute as many true generations,...constitute as many trees ; on the other hand, the whole suit, from the first to the last, constitute but a single true generation. I would insist upon this...

...colonies of Aphididae cannot Ъе said to constitute aa many true generations, any more than the dilferent branches, of a tree can be said to constitute as many...single true generation. I would insist upon this point aa illustrative of the distinction to be drawn between sexual and gemmiparous reproduction. Morphologically,...

...processes therein concerned. Viewed in this way, the different broods cr colonies of Aphididae cannot ^e said to constitute as many true generations, any more...of a tree can be said to constitute as many trees 5 on the other hand the whole suite, from the first to the last, constitute but a single true generation....