The book Nature Readers: Sea-Side And Way-Side. No. 1-4 was written by author Julia Mcnair Wright Here you can read free online of Nature Readers: Sea-Side And Way-Side. No. 1-4 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Nature Readers: Sea-Side And Way-Side. No. 1-4 a good or bad book?
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139 with the easy transition of carefully shaded colors, or the ascent of the scale from note to note. But this creative harmony began veiy long ago, and in the innumerable ages which have rolled by with their train of living things, many types have been lost. Enough remain to fill us with wonder and admiration, when we see how the organism of one crea- ture has been changed and adapted in some other succeeding animal. We quoted in the last lesson the remark, " a bird is but a glorified reptile... " ; and, far apart in type as we might at first glance consider an eagle and a crocodile, or a lizard and a dove, it is not very difficult to trace, by the help of fossil forms, the similarity of organism and the steps in the process of change. Reptiles and birds belong to the class verte- brates ; the backbone is then the first distinguishing feature. In the reptile, the spinal column with well-defined vertebrsB passes from the head to the tail. 1 In the bird we find the vertebrae of the neck well marked, and more numerous than in the reptile ; the shoulder-plates, breast-bone and hip-bones are largely developed, forming the box-like body of the bird, and embracing the backbone.
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