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WithinSource

On the Origin of Species By Means of Natural Selection

Page 393 of 406, printed 393

greatly developed, variable, 150. degrees of utility of, 201. Parus major, 183. Passiflora, 251. Peaches in United States, 85. Pear, grafts of, 261. Pelargonium: flowers of, 145. sterility of, 251. Pelvis of women, 144. Peloria, 145. Period, glacial, 365. Petrels, habits of, 184. Phasianus, fertility of hybrids, 253. Pheasant, young, wild, 216. Philippi on tertiary species in Sicily, 312. Pictet, Professor: on groups of species suddenly appearing, 302, 305. on rate of organic change, 313. on continuous succession of genera, 316. on close alliance of fossils in consecutive formations, 335. on embryological succession, 338. Pierce, Mr., on varieties of wolves, 91. Pigeons: with feathered feet and skin between toes, 12. 393
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