CONTENTS. 



PAGE 



APPENDIX B. ON A NEW FORM OF AZIMUTH 

 MIRROR 329 



Being extract from United Service Institution Lecture, 

 1878 ; with, additions of date 1890. 



APPENDIX C. REMARKABLE LOCAL MAGNETIC DIS- 

 TURBANCE NEAR COSSACK (PORT WALCOTT), 

 NORTH-WEST AUSTRALIA 501 



Being an account by Captain Creak, R.N., F. /v. S. , 

 of observations made subsequently to those described 

 on pp. 255 266. 



ON DEEP-SEA SOUNDING BY PIANOFORTE 



WIRE 337 



Paper communicated to the Society of Telegraph 

 Engineers, Apr^l 22, 1874 



APPENDIX A. ON FLYING SOUNDINGS 369 



APPENDIX B. DESCRIPTION OF THE SOUNDING 

 MACHINE 372 



APPENDIX C. THE DEPTH-RECORDER 375 



APPENDIX D 377 



Extracts from paper read, and illustrated by apparatus 

 exhibited, before United Service Institution, 

 February 4, 1878. 



ON LIGHTHOUSE CHARACTERISTICS 389 



Paper read at the Naval and Marine Exhibition, 

 Glasgow, Febrttary n, 1881. 



