71. Speed of motor car, 105. Coal, as fuel, 15; gas, 394; gas plant, _396_; gas, purification of, 397. Cochlea, 273. Coherer, 140. Coil, Ruhmkorff, 121. Coke, 395. Combinations in Chubb lock, 436; Yale lock, _436_, _437_. Yellow spot, in eye, 251. Zech, Jacob, 414. Zeiss field-glasses, 260. THE END. LONDON: PRINTED BY SPOTTISWOODE AND CO, NEW-STREET SQUARE PARLIAMENT STREET SIXTH EDITION. TO AVOID unwieldiness of bulk this edition of the vegetable world mediately; that is buried fathom deep, and for the act 0.1 of a.