 ... greatly alter (as indeed I have observed in parts of South America) the vegetation: this again would largely affect the insects ; and this, as we...  Darwinism and Human Life - Page 11by John Arthur Thomson - 1917 - 263 lehteFull view - About this book
 | Charles Darwin - 1864 - 472 lehte
...probably regulated by hawks or beasts of prey) were to increase in Paraguay, the flies would decrease — then cattle and horses would become \feral, and this...again would largely affect the insects ; and this, as \ve just have seen in Staffordshire, the insectivorous birds, and so onwards in ever-increasing circles... | |
 | Charles Darwin - 1866 - 668 lehte
...as they are, must be habitually checked by some means, probably by other parasitic insects. Hence, if certain insectivorous birds were to decrease in...probably increase ; and this would lessen the number of the navel-frequenting flies — then cattle and horses would become feral, and this would certainly... | |
 | 1906 - 960 lehte
...in Paraguay, the parasitic insects would probably increase; and this would lessen the number of the navel-frequenting flies — then cattle and horses would become feral, and this would greatly alter (as indeed I have observed in parts of South America) the vegetation: this again would... | |
 | Norfolk and Norwich Naturalists' Society - 1884 - 820 lehte
...as they are, must be habitually checked by some means, probably by other parasitic insects, llence, if certain insectivorous birds were to decrease in...this would lessen the number of navel-frequenting Hies — then cattle and Horses would run wild ; and this would certainly alter (as indeed I have observed... | |
 | Dr. Schmidt (Eduard Oskar) - 1875 - 376 lehte
...in Paraguay, the parasitic insects would probably increase, and this would lessen the number of the navel-frequenting flies ; then cattle and horses would...observed in parts of South America) the vegetation, and this, again, would largely affect the insects, and this the insectivorous birds, and so on, in... | |
 | Charles Darwin - 1875 - 504 lehte
...they are, must be habitually checked by •erne means, probably by other parasitic insects. Hence, if certain insectivorous birds were to decrease in...probably increase ; and this would lessen the number of the navel-frequenting flies — then cattle and horses would become feral, and this would certainly... | |
 | Dr. Schmidt (Eduard Oskar), Oscar Schmidt - 1875 - 362 lehte
...numerous as they are, must be habitually checked by some means, probably by other parasitic insects. Hence if certain insectivorous birds were to decrease in...probably increase, and this would lessen the number of the navel-frequenting flies ; then cattle and horses would become feral, and this would certainly greatly... | |
 | Dr. Schmidt (Eduard Oskar), Oscar Schmidt - 1875 - 372 lehte
...numerous as they are, must be habitually checked by some means, probably by other parasitic insects. Hence if certain insectivorous birds were to decrease in...probably increase, and this would lessen the number of the navel-frequenting flies ; then cattle and horses would become feral, and this would certainly greatly... | |
 | Alfred Russel Wallace - 1880 - 568 lehte
...as they are, must be habitually checked by some means, probably by other parasitic insects. Hence, if certain insectivorous birds were to decrease in...navel-frequenting flies — then cattle and horses would run wild ; and this would certainly alter (as indeed I have observed in parts of South America) the... | |
 | Charles Darwin - 1882 - 492 lehte
...the navel-frequenting flies — then cattle and hones would henomo feral, and this would certain', r greatly alter (as indeed I have observed in parts...: this again would largely affect the insects; and tils, as we have just seen in Staffordshire, the insectivorous birds, and so onwards in ever-increasing... | |
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