21 



moineter, Barometer, and Hygrometer as Weather Guides," 

 and " Form Books," for suveyors. 



Twenty- two charts were issued, of which seven were re- 

 publications of corrected Blunt charts, one a rt publication 

 of the corrected North Pacific Surveying Expedition chart, 

 and fourteen republications of foreign charts by the litho- 

 graphic process. 



On the 5th of October, 1869, Commodore George P. Em- Commodore 



' Emmons ordered 



mons took charge of the Office. During his incumbency, in to take charge of 



, . Hydrographic 



the following year, the cheaper process of reproducing omce. 

 charts by "autographing" was first employed. At this 

 time there still remained in the possession of Messrs. Blunt 

 a number of chart-plates not included in the original pur- 

 chase. In December these additional plates were obtained 

 by the Office at a cost of $11,149.20. Commodore Emmons 

 remained at the head of the Office until the 1st of October, 

 1870, when he was relieved by Capt. E. H. Wyman. 



FISCAL TEAR ENDING JUNE 30, 1871. 



Early in Captain Wyman's administration Commodore mfn^rdered^to 

 James Alden, the Chief of the Bureau of Navigation, issued ^ k ® char se of 



7 ° ' Hydros r a p h i c 



the following order reorganizing the Hydrographic Office 0&ce - 

 and dividing it into departments, which was approved by 

 the Secretary of the Navy on the 21st of January, 1871 : 



" The officer in charge of the Hydrographic Office will be thJ^HyK^ 

 the ' Hydrographer to the Bureau of Navigation,' and be §epar[m^nts. 1Dto 

 responsible for everything emanating from that Office. 

 From intercourse with foreign hydrographic offices, infor- 

 mation received from our naval vessels and mercantile 

 marine, together with the perusal of hydrographic publica- 

 tions, &c, he is expected to be acquainted with what has 

 already been done and is doing in this branch, and to point 

 out what may, from time to time, be desirable to accom- 

 plish." 



" Under the hydrographer there will be five departments, 

 as follows : 



No. 1. Archives, &c. J£f &*£ 



No. 2. Chart department. ments - 



No. 3. Meteorological department. 



No. 4. Drafting and Engraving. 



No. 5. Instruments. 



