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To say that it is the only process by which the baky and chappy soil of Tiptree can be thoroughly fertilised, would not suffice to prove its necessity or value to other soils of different composition. One fact, however, may be sufficient to determine its virtue. The fields of clover, and Italian rye-grass, etc., are mown three and even four times in one season, and afterwards fed with sheep.
Thus this elegant little creature becomes the useful means of disseminating the remarkable nutmeg-tree, and it is found that some chemical treatment corresponding to that which it undergoes during sojourn within the body of the bird, is actually necessary before the nut can be fertilised and induced to take root.
Wealth that is the property of other men, soil that has been fertilised by the sweat of a nation of agriculturists, whom Great Britain despised until she learned that gold lay under their orchards and cornfields." He broke into a jarring laugh. "And it is for these, the robbers and desperadoes, that the British Army is to do its duty, and for them that De Boursy-Williams is to help pay the piper.
Again, as in making reciprocal crosses between the same two species, there is occasionally a great difference in the result, so the same thing occurs with trimorphic plants; for instance, the mid-styled form of Lythrum salicaria was illegitimately fertilised with the greatest ease by pollen from the longer stamens of the short-styled form, and yielded many seeds; but the latter form did not yield a single seed when fertilised by the longer stamens of the mid-styled form.
It is most picturesquely situated at the foot of some low spurs, volcanic in nature, and is fertilised by a stream so very hot that you can hardly put your hands in it; indeed, in the tanks where it is collected in large volume, it is quite impossible. It is much cooler in the little irrigation channels, which have hard beds from the incrustation of the sulphur.
'Debarred from every other trade and industry, wrote the late Lord Dufferin, 'the entire nation flung itself back upon the land, with as fatal an impulse as when a river, whose current is suddenly impeded, rolls back and drowns the valley which it once fertilised. The energies, the hopes, nay, the very existence of the race, became thus intimately bound up with agriculture.
It seems obvious that the corpora lutea in evolution were a consequence of intra-uterine gestation, for they occur only in association with this condition, and it is impossible to suppose that a mutation could arise accidentally by which the ruptured follicles should produce a secretion which would cause the fertilised ova to develop within the oviducts.
Secondly, That by this dissolution of those rocks, and the accumulation of those vegetable bodies, there is soil prepared for the nurture and propagation of another genus of plants, by which the surface of the earth, naturally barren, is to be fertilised.
Just as the old embryologists conceived the adult individual to be contained with all its organs to the most minute details within the protoplasm of the fertilised ovum or one of the gametes, so the modern Mendelian, because he is unable to conceive or to obtain the evidence of the gradual development of a hereditary factor, conceives all the hereditary factors of the whole animal kingdom packed in infinite complexity within the protoplasm of the primordial living cells.
As soon as he grew cool again, he was as much tormented as before by what was at bottom more an intellectual curiosity than a moral anguish. There was some moral awakening in it; he had some real qualms about sin, some real aspirations after holiness, and, so far, the self-consciousness which had first stirred at Haworth was deepened and fertilised.
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