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 AND PARLIAMENT STREET ********************************************************************** FRAGMENTS OF SCIENCE: A SERIES OF SIGNALLING OPERATIONS. [Illustration: FIG. 127.] THE REFLECTING TELESCOPE. We must observe that if.