As far as the actual reef of coral is concerned, there is not the smallest difference, in general size, outline, grouping, and even in quite trifling details of structure, between a barrier and an atoll.
Not only the grand features in the structure of barrier-reefs and of atolls, and to their likeness to each other in form, size, and other characters, are explained on the theory of subsidence -- which theory we are independently forced to admit in the very areas in question, from the necessity of finding bases for the corals within the requisite depth -- but many details in structure and exceptional cases can thus also be simply explained.
I will not enter on many more details; but I must remark that the curious structure of the northern Maldiva atolls receives (taking into consideration the free entrance of the sea through their broken margins) a simple explanation in the upward and outward growth of the corals, originally based both on small detached reefs in their lagoons, such as occur in common atolls, and on broken portions of the linear marginal reef, such as bounds every atoll of the ordinary form.
and it is really surprising to note the endless points in structure and constitution in which the varieties and sub-varieties differ slightly from each other.
If strange and rare deviations of structure are truly inherited, less strange and commoner deviations may be freely admitted to be inheritable.
If it could be shown that our domestic varieties manifested a strong tendency to reversion,--that is, to lose their acquired characters, whilst kept under unchanged conditions, and whilst kept in a considerable body, so that free intercrossing might check, by blending together, any slight deviations of structure, in such case, I grant that we could deduce nothing from domestic varieties in regard to species.
In any work of literature there should be definite structure.
Sometimes, however, the structure just indicated may not be followed; a story may begin in the middle, and the earlier part may be told later on in retrospect, or incidentally indicated, like the Antecedent Action.
It may be asked further of poetry, whether the meter and stanza structure are appropriate to the mood and thought and so handled as to bring out the emotion effectively; and whether the sound is adapted to the sense (for example, musical where the idea is of peace or quiet beauty).
In that world some structure
was still being erected and did not fall, something was still stretching out, and the candle with its red halo was still burning, and the same shirtlike sphinx lay near the door; but besides all this something creaked, there was a whiff of fresh air, and a new white sphinx appeared, standing at the door.
Enough has now been said concerning the structure
of the incidents, and the right kind of plot.
The only answer that can be given is, that as all these exterior provisions are found to be inadequate, the defect must be supplied, by so contriving the interior structure
of the government as that its several constituent parts may, by their mutual relations, be the means of keeping each other in their proper places.