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After floating round for twenty-five years amidst derision, the rumour proved true in part. Ph. Sanderiana is not scarlet but purplish rose, a very handsome and distinct species. To the same collector we owe the noblest of Aerides, A. Lawrenciæ, waxy white tipped with purple, and deep purple lip. Besides the lovely colouring it is the largest by far of that genus. Mr.
On this same view we can understand how it is that in a region where many species of a genus have been produced, and where they now flourish, these same species should present many varieties; for where the manufactory of species has been active, we might expect, as a general rule, to find it still in action; and this is the case if varieties be incipient species.
Thus at this stage of existence, this fly, often so destructive, even at times killing our horses, is beneficial. During the hotter parts of summer, and when the sun is shining brightly, thousands of these Horse flies appear on our marshes and inland prairies. There are many different kinds, over one hundred species of the genus Tabanus alone, living in North America.
His aim is first to study the way in which a city grows, always having due regard to its physical environment; secondly, by comparing like with like, as a naturalist compares the individuals of a species, or the species of a genus, to throw light on the laws which govern civic development, and thus to help forward and direct civic action.
There are many other distinctions, but as all have exceptions they are of value only in combinations. The earliest known deer, belonging to the genus Dremotherium, or Amphitragulus, from the middle Tertiary of France, were of small size and had four toes, canine teeth and no antlers.
When I had read Charles Darwin's book 'On the Origin of Species, it seemed to me that there was one mode, and that perhaps the most certain, of testing the correctness of the views developed in it, namely, to attempt apply them as specially as possible to some particular group of animals. such an attempt to establish a genealogical tree, whether for the families of a class, the genera of a large family, or for the species of an extensive genus, and to produce pictures as complete and intelligible as possible of the common ancestors of the various smaller and larger circles, might furnish a result in three different ways.
Several other singular rules could be given from Gärtner: for instance, some species have a remarkable power of crossing with other species; other species of the same genus have a remarkable power of impressing their likeness on their hybrid offspring; but these two powers do not at all necessarily go together.
The swallows are the companions of the human race, nesting beneath their eaves, and sharing the shelter of their roofs in every clime. Why this difference exists in creatures subjected to the same conditions is a puzzle that we cannot explain. In like manner we may observe the difference in animals, many of which are by nature extremely timid, while others of the same genus are more bold.
It occurs in the wild state in some parts of Mexico, where the Cypripedium also grows. Its claims to be a separate genus are lessened by the somewhat monstrous condition of the sexual organs, which are described as quite abnormal. But here also, intermediates are lacking, and this fact points to a sudden origin.
The spangled coquette, like all of its genus, possesses a well-defined crest on the head, and a number of feathers projecting from the neck. This singular crest it can raise or depress at will, producing a curious effect in the appearance of the little bird. When depressed, the crest lies fiat, and projects on either side, so that the sparkling eyes can scarcely be seen.
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