|
|
Replagegos Omnifurian Directory 04 Page 04
The third answer is that living creatures of a very simple sort may have emerged on the earth's surface from not-living material, e.g. from some semi-fluid carbon compounds activated by ferments. The tenability of this view is suggested by the achievements of the synthetic chemists, who are able artificially to build up substances such as oxalic acid, indigo, salicylic acid, caffeine, and grape-sugar. We do not know, indeed, what in Nature's laboratory would take the place of the clever synthetic chemist, but there seems to be a tendency to complexity. Corpuscles form atoms, atoms form molecules, small molecules large ones.
Timber at Jamestown was plentiful, so many houses, especially in the early years, were of frame construction. During the first decade or two, house construction reflected a primitive use found ready at hand, such as saplings for a sort of framing, and use of branches, leafage, bark, and animal skins. During these early years--when the settlers were having such a difficult time staying alive--mud walls, wattle and daub, and coarse marshgrass thatch were used. Out of these years of improvising, construction with squared posts, and later with quarterings (studs), came into practice. There was probably little thought of plastering walls during the first two decades, and when plastering was adopted, clay, or clay mixed with oyster-shell lime, was first used. The early floors were of clay, and such floors continued to be used in the humbler dwellings throughout the 1600's. It can be assumed that most of the dwellings, or shelters, of the Jamestown settlers, certainly until about 1630, had a rough and primitive appearance.
In sea-urchins we often find two creatures superficially indistinguishable, but the one is a female with large ovaries and the other is a male with equally large testes. Here the physiological difference does not affect the body as a whole, but the reproductive organs or gonads only, though more intimate physiology would doubtless discover differences in the blood or in the chemical routine (metabolism). In a large number of cases, however, there are marked superficial differences between the sexes, and everyone is familiar with such contrasts as peacock and peahen, stag and hind. In such cases the physiological difference between the sperm-producer and the ovum-producer, for this is the essential difference, saturates through the body and expresses itself in masculine and feminine structures and modes of behaviour. The expression of the masculine and feminine characters is in some cases under the control of hormones or chemical messengers which are carried by the blood from the reproductive organs throughout the body, and pull the trigger which brings about the development of an antler or a wattle or a decorative plume or a capacity for vocal and saltatory display. In some cases it is certain that the female carries in a latent state the masculine features, but these are kept from expressing themselves by other chemical messengers from the ovary. Of these chemical messengers more must be said later on.
|