Text Appearing Before Image: Fig. 27.—A Faun, to showthe goat-like tail. DISUSE AND ITS EFFECTS. 55 the number may amount to five, and no abnormal pro-jection be observable. Thus far a well-developed tailin an adult human subject containing bony elementscontinuing the vertebral series has yet to be detected.In the new-born child, soft tails about an inch in lengthhave been observed : these contained cartilaginous tissueand resembled the flexible tail of pigs. Text Appearing After Image: Fig. 28.—An ^Egipan sporting with a Faun. Bacchus and Silenus. Many instances of tailed children when criticallyexamined turn out to be tumours or tufts of hair in theloin. A general notion of a false tail may be gatheredfrom the African child represented in fig. 26. In thiscase a large rounded tumour hangs pendulous from thechilds buttocks, and a little imagination would soon S6 E VOL UTION AND DISEASE. distort this into a tail. The tumour was removed inCentral Africa and sent to Professor Virchow.1 Thependulous mass consists of a hollow central cavity sur-rounded by fat and covered externally by skin, and inVirchows opinion it arose as a diverticulum from themembranes of the spinal cord (spina bifida). The most interesting false tails are those formed oftufts of hair. It was mentioned in the last chapter thatcertain malformations of the spinal column are associ-ated with hair-fields and long tufts of hair in the loin.Sometimes, as in the example on page 23, the hairs areseveral in
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