Ear, 272; round, in ear, 272. Wireless telegraphy, 137; advance of, 145; receiver, 140, 141; syntonic, 143; transmitter, 138, _139_. 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 AND PARLIAMENT STREET SIXTH EDITION, VOL. 1. LONDON: LONGMANS, GREEN, AND CO. 1879. All rights reserved. PREFACE TO THE SIXTH COMMANDMENT 0.75 III. ROSE'S TEMPTATION. THE FOURTH COMMANDMENT 0.75 VI. PINKIE AND THE BELFAST ADDRESS. XII. FERMENTATION, & ITS BEARINGS ON SURGERY & MEDICINE. XIII. SPONTANEOUS GENERATION. XIV. SCIENCE AND MAN. XV. PROFESSOR VIRCHOW AND EVOLUTION. THIS world of law. .