63 

 Australia, Tasmania, and New Zealand:'' and a pamphlet Publications of 



__.__'. T _, Die Office— Con- 



On "West India Hurricanes," by Lieut. George L. Dyer. Oftinued. 



the fifty-four charts published thirty-two were engraved, 



two photolithographed, and thirty heliographed. Among 



those engraved were four sheets each of the China Sea, 



South Pacific Ocean, and Magellan Straits series, and two 



sheets of the North Atlantic series. 



Table showing the average number of officers on duty in the Hydrographio 

 Office during each year. 



| Average | 



Tear, numberof, 



1 officers. | 



Tear. 



Average 



numberof 



officers. 



Tear. 



Average 



numberof 



officers. 



Tear. 



Average 



numberof 



officers. 



1866. 



1867 



1868 



1869 



1870 



3 ! 



3 ' 

 2 I 



4 ! 



7 I 



1871 



1872 



1873 



1874 



1875 .... 



6 



9 



11 



15 



14 



1876 



1877 



1878 



1879 



1880 



16 

 16 

 16 

 21 

 23 



1881 .... 



1882 . .. 

 1883 

 1884 

 1885 . . 



21 

 21 

 22 

 18 

 18 



