MIRACLES OF SCIENCE 



Mars, measurement of its parallax Mitchell, The Rev. John, con- 

 a valuable aid in determining structed an apparatus for weigh- 

 the sun's distance, 76; its ing the world, 63. 

 average density 3.95, or about Microbes and vaccines, 208. 

 7/10 that of the earth, 84; its Milk, an attempt to sterilize it 



with the ultraviolet ray, 242 ; its 

 pasteurization, 242. 

 Milky Way, its stars are exceed- 

 ingly remote and are not part 

 of the main star streams dis- 

 covered by Professor Kapteyn 

 and Mr. Plummer, 57; its stars 

 mostly too faint to be tested 

 accurately with the spectroscope, 

 57; an optical illusion makes it 

 seem like a coil of stars wound 

 about our lensshaped universe, 

 58. 



of Millikan, Professor R. A., his 

 isolation of an individual elec- 

 tron, 128. 

 Miracles, scientific, performed by 



men of science, 1. 

 Missing Link, between vertebrates 



and invertebrates, 173. 



to the Panama Canal Zone, 247, Mixed infections, how they com- 

 254. plicate the work of the immuni- 



Members, the restoration of lost, zator, 218. 



153. Mizar, its complex system, 98. 



Mendel, Gregor, his life and work, Molecules, of salt, in a solution, 



system of alleged canals, 87; 

 Professor Maunder's curious 

 test of its canal system, 88. 



Maskelyne, British Astronomer 

 Royal, used plumb line method 

 to test the earth's mass, 63. 



Mastering the microbe, Chapter 

 7, 208. 



Maunder, Professor E. Walter, 

 discusses the habitable planets, 

 85; makes curious test to de- 

 termine the nature of the canals 

 of Mars, 88; his estimates of 

 the possible habitability 

 Venus, 90. 



Maury, Miss, discovers spectro- 

 scopic binaries, 95. 



Maxwell, J. Clerk, his studies of 

 electro-magnetism, 306. 



Mears, Dr. J. E., report of a visit 



191. 



Mendelian heredity, applied to 

 human beings, 200; and human 

 eyes, 201. 



Mendelism, the new theory of, 

 190 ; its rediscovery and rapid 

 progress, 195. 



Mendel's law of the transmission 

 of unit characters, 193; as il- 

 lustrated by Prof. Punnett, 194 ; 

 examples of its practical ap- 

 plication, 195; a simple formula 

 to illustrate, 196. 



Mercury, its mass about 1/33 that 

 of the earth, 85 



102 ; their action in solution in 

 producing osmosis according to 

 the theory of Van't Hoff, 103. 



Moon, the origin of its craters, 

 16; how it is weighed, 66; is of 

 such size as materially to affect 

 the earth's motion, 69. 



Morgan, Professor T. H., his 

 experiments in growing new 

 heads on decapitated worms, 

 151; produces a two-headed 

 earth worm, 152 ; treats the eggs 

 of a fly with radium to produce 

 mutants, 185. 



Metchnikoff, Prof. Elie, discovers Mosquito, shown by Ross to be 

 a function of the white blood the carrier of malaria, 244. 



corpusles, 224. 



Moulton, Prof. T. R., associated 



Meteorites, as fragments of an with Chamberlin in development 

 original nebula, 10. of planetesimal theory, 8; his 



336 



