INDEX 



zinische Psychologic, oder Phys- 

 iologic dcr Seele, iv. 263. 



Louis, the "statistical method " 

 introduced by, iv. 203. 



Low temperature, experiments 

 with, v. 39-41; electrical and 

 magnetic conditions at, v. 

 56; changes in color of sub- 

 stances at, v. 57; substances 

 made luminous by, v. 58; 

 effect of, upon the strength of 

 materials, v. 59; decrease of 

 chemical activity at, v. 60; 

 approach to the absolute zero, 

 v. 69. 



Lubbock, Sir John, a recruit to 

 the Darwinian theory, iv. 175. 



Ludolff, Christian Frie'drich, ex- 

 periment with the electric 

 spark, ii. 276. 



Lyell, Sir Charles, repudiated all 

 thought of catastrophism, iii. 

 88; he adopted and extended 

 the Huttonian doctrine, iii. 

 92; his theories are changed 

 by Darwin's Origin of Species, 

 iii. 97; claimed that past 

 changes of the earth's surface 

 have been like present changes, 

 iii. 141; accepts Darwin's the- 

 ory, iv. 174. 



Lyncean Society, ii. 200. 



MAGENDIE, FRANfois, and phys- 

 ical diagnosis, iv. 203. 



Malpighi, Marcello, demonstrates 

 passage of blood from arteries 

 to veins through capillaries, ii. 

 178; dissections of animal 

 tissues and plants, ii. 297, 

 298. 



Mammalian types, the living 

 fauna of Australia to-day 

 existed in Europe and died out 

 in the tertiary age, iii. 160. 



Marchettis, Peter, Italian sur- 

 geon, ii. 185. 



Mariette, a worker in the field of 

 practical exploration, i. 28. 



Marine Biological Laboratory at 

 Naples, the, v. 113-143; the 

 aquarium in, v. 113-119; ar- 



rangement of tanks and ex- 

 hibits in, v. 114; eels and 

 cuttle-fish in, v. 116; the octo- 

 pus in, v. 117; the technical 

 department of, v. 120; Dr. 

 Anton Dohrn, founder of, v. 

 121 ; his associates, v. 122; 

 collecting specimens for, v. 

 123, 124; methods of pre- 

 serving jellyfish in, v. 127; 

 many nationalities represented 

 among the workers in, v. 130; 

 Dr. Driesch's studies of hered- 

 ity at, v. 131; the study of 

 chromosomes at, v. 133; ex- 

 periments in the division of 

 egg-cells at, v. 134; publica- 

 tions of, v. 139; marine labora- 

 tories of other countries, v. 



143- 



Mariotte, Edme. ii. 210. 



Marsh, Professor, his discovery 

 of the remains of many verte- 

 brates in the Rocky Mountain 

 region, iii. 106; his description 

 of the fossil horses, iii. 108. 



Maspero, a student of Egyptian 

 history, i. 28; held that the 

 epagomenal days were in use 

 before the first Thinite dynas- 

 ty, i. 36. 



Maupertuis and the idea of the 

 transmutation of species, iv. 

 149. 



Maury, M. F., his theory as to 

 the causes of the Gulf Stream, 

 iii. 196. 



Mayer, Dr. Julius Robert, his 

 paper on "The Forces of 

 Inorganic Nature," iii. 259; 

 asserts that a force once in ex- 

 istence cannot be annihilated, 

 iii. 263; gave for the first time 

 a tenable explanation of the 

 light and heat of the sun and 

 stars, iii. 268; his explanation 

 of the continued heat of the 

 sun, v. 206. 



Mayow, John, experiments with 

 air, iv. 6. 



Medical laboratories, some, v. 

 178-202. 



VOL. V. 19 



289 



