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Zypro Gorgy Dectorum 23
Page 12
This motion, whether it is towards or away from the central, lens-shaped portion, would cause a double streaming motion in that central portion of the kind we have found in our own system. Again, and altogether apart from these considerations, there are good reasons for supposing our Milky Way to possess a double-armed spiral structure. And the great patches of dark absorbing matter which are known to exist in the Milky Way (see Fig. 22) would give very much the mottled appearance we notice in the arms (which we see edge-on) of the nebula in Coma Berenices. The hypothesis, therefore, that our universe is a spiral nebula has much to be said for it. If it be accepted it greatly increases our estimate of the size of the material universe. For our central, lens-shaped system is calculated to extend towards the Milky Way for more than twenty thousand times a million million miles, and about a third of this distance towards what we have called the poles. If, as we suppose, each spiral nebula is an independent stellar universe comparable in size with our own, then, since there are hundreds of thousands of spiral nebulae, we see that the size of the whole material universe is indeed beyond our comprehension.
On January 7th we arrived at the large settlement of Condamano, a sub-Prefecture in the big province of Loreto. There were two parallel streets, clean and well kept, with others intersecting at right angles. On the main street along the water front were many large commercial houses, handsome buildings of _cana_ walls and zinc roofs. The place had been built on a flat high land about 30 ft. above the river, and had some 1,500 to 2,000 inhabitants. One of the peculiarities of Condamano was that during the rubber-collecting season the population consisted almost entirely of women, as the men were in the forest collecting the latex.
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