6(5 



c. 



Catalogue made of original surveys ^ gi 



Chauvenet, W., appointed member of the board to estimate value of en- 

 graved plates • . jg 



Cbenery, Lieut. L., compilations by 3 u 



Chronometers, want of care in rating, &c, prior to establishment of Depot.. 5 



glaring mistake in rate of, discovered after sailing - 5 



trial of, to be made in Depot prior to their purchase 7 



Charts, construction of, authorized by Congress 2.7 



compass-stations, publication of j« 



compass, improvements made in 59 



comparison of number of French and of English charts with our own. 49 



engraved, first production of 20 



engraved between 1844 and 1861, number of 15 



engraving of, prevented by want of funds 37 



foreign, to be reduced to meridian of Greenwich 



general sailing, preparations to issue for South Atlantic 46 



gnomonic, computations made for g0 



index, set of, published 59 



meteorological, issued 45 



new issue of 57 



P ilot ."""! Kfi 



uniform scale of, adopted 59 



variation, collection of data begun 59 



wbale, collection of data for 14 



first issue of -m 



wind and current, first issue of 14 



charts included under the general name of 14 



information given by 14 



regions covered by 14 



number issued 15 



collection of data discontinued 35 



Civilian establishment increased 20 



Congress opposes establishment of astronomical observatory 10 



Consuls, United States, circular sent out to, requesting hydrographic inform- 

 ation 53 



Coast-Survey, relations with Hydrographic Office 45 



Coghlan, Lieutenant-Commander J. B., translation by 36 



Columbia, District of, permanent Depot to be located in 12 



Commissioners, Board of Navy, recommend the establishment of Depot of 



Charts aud Instruments 3 



dissolved 23 



recommend establishment of permanent Depot 11 



D. 



Davis, Kear-Aduiiral C. H., becomes Superintendent of Depot 17 



De Krafft, Capt. J. C. P., ordered as Hydrographer 47 



Dyer, Lieut. George L., pamphlet by 63 



