 | 1860 - 982 頁
...area is already stocked with inhabitants, the other species will decrease. When we travel southward and see a species decreasing in numbers, we may feel...all kinds, and therefore of competitors, decreases northwards; hence in going northward, or in ascending a mountain, we far oftener meet with stunted... | |
 | Charles Darwin - 1861 - 470 頁
...area is already fully stocked inhabitants, the other species will decrease, When we travel southward and see a species decreasing in numbers, we may feel...the cause lies quite as much in other species being favoured, as in this one being hurt. So it is when we travel northward, but in a somewhat lesser degree,... | |
 | Charles Darwin - 1864 - 472 頁
...already fully stocked with inhabitants, the other species will decrease. When -we travel southward and see a species decreasing in numbers, we may feel...the cause lies quite as much in other species being favoured, as in this one being hurt. So it is when we travel northward, but in a somewhat lesser degree,... | |
 | Asa Gray - 1878 - 416 頁
...the other species will decrease. "When we travel southward and see a species decreasing in numhers, we may feel sure that the cause lies quite as much...northward, but in a somewhat lesser degree, for the number 01 species of all kinds, and therefore of competitors, decreases northward; hence, in going northward,... | |
 | Asa Gray - 1877 - 418 頁
...the other species will decrease. When we travel southward and see a species decreasing in numbers, wo may feel sure that the cause lies quite as much in...northward, but in a somewhat lesser degree, for the number or species of all kinds, and therefore of competitors, decreases northward; hence, in going northward,... | |
 | Charles Darwin - 1882 - 492 頁
...is already fully stocked with inhabitants, the other species must decrease. When we travel southward and see a species decreasing in numbers, we may feel sure that tho cause lies quite as much in other species being favoured, as in this one being hurt. So it is when... | |
 | Asa Gray - 1889 - 524 頁
...area is already stocked with inhabitants, the other species will decrease. When we travel southward and see a species decreasing in numbers, we may feel...northward, but in a somewhat lesser degree, for the number 01 species of all kinds, and therefore of competitors, decreases northward; hence, in going northward,... | |
 | Henry Coppée - 1893 - 560 頁
...is already fully stocked with inhabitants, the other species must decrease. When we travel southward and see a species decreasing in numbers, we may feel...but in a somewhat lesser degree, for the number of specie« of all kinds, and therefore of competitors, decreases northward ; hence, in going northward... | |
 | Charles Darwin - 1896 - 406 頁
...is already fully stocked with inhabitants, the other species must decrease. When we travel southward and see a species decreasing in numbers, we may feel...the cause lies quite as much in other species being favoured, as in this one being hurt. So it is when we travel northward, but in a somewhat lesser degree,... | |
 | Charles Darwin - 1896 - 408 頁
...is already fully stocked with inhabitants, the other species must decrease. When we travel southward and see a species decreasing in numbers, we may feel...the cause lies quite as much in other species being favoured, as in this one being hurt. So it is when we travel northward, but in a somewhat lesser degree,... | |
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When we travel southward and see a species decreasing in numbers, we may feel sure that the cause lies quite as much in other species being favored, as in this one being hurt. 
