story of
章节目录
共 29 段- At the close of the Permian and beginning of the Trias, in t
- The lowest cryptogams have no stems, leaves, or roots. They
- In the Southern region, the Mediterranean forms the centre.
- The plains of Venezuela, known under the name of Llanos, are
- But onward, ever onward, strives the insatiable son of Iapet
- Those, therefore, who can view nature with a comprehensive g
- The internal anatomy of the Lycopodiaceæ is somewhat complex
- In these and kindred vital processes, in the so-called sleep
- Magnol established seventy-six families, but without giving
- In Cyclanthera, a plant allied to the cucumber, the fruit is
- The protection of leaves against various hurtful agencies ne
- Another class of movements may be mentioned, viz., movements
- There is one interesting point which deserves notice. We hav
- The mere size of this mammoth among flowers would in itself
- For consider a little what each of those five tribes has bee
- A somewhat analogous case is the yellow bugle of the Riviera
- The largest of the family, and perhaps the most beautiful, i
- The reason for the evolution of deciduous trees is of course
- It is different in the steppes which stretch from southern R
- And above all you catch a glimpse of that crimson mass of No
- The key to this strange resemblance between the chestnut and
- In many of their properties the fungi are closely allied to
- says Dr. Darwin, and appends a note that flashes of lightnin
- The organs of fructification, however, with which mosses are
- The sea-sedges, a cat’s-tail grass, a foxtail grass, an agro
- A rose-red filamentous sea-weed being from two to six inches
- There is one point in the history of the Sargassum which has
- ETIOLATION, blanching; losing color through growth in the da
- POLYANDROUS, stamens above twenty.