1878.] 



to the Reproduction of Maps and Flam 



57 



the publication could keep pace with the surveys, and the consequence 

 was that the record rooms became filled with valuable materials that 

 often could not be turned to practical account till they had become anti- 

 quated and out o£ date. Now, on the contrary, by the aid of photozinco- 

 graphy, the publishing branches are able to keep pace with the progress of 

 the Surveys so closely that as a rule each season's mapping of all the 1-inch 

 Topographical and some of the Eevenue Surveys is reproduced and pub- 

 lished before the drawing of the following season's maps is taken in hand. 

 An immense amount of work is thus done that could never have been 

 undertaken by lithography and engraving alone, even though the transfer 

 of the engraving of the Atlas of India to Calcutta has greatly facilitated 

 the early publication of the latest additions to the Atlas year by year. And 

 not only are the ordinary departmental publications thus hastened, but a 

 very large number of miscellaneous maps and drawings are reproduced 

 specially for the use of other departments of the public service. 



The following table of the work executed by the Photographic Branch 

 of the Surveyor General's Office, Calcutta, during the year 1877, will give 

 an idea of the very large extent to which photography is being used for the 

 reproduction and publication of the results of the Imperial Surveys and 

 other miscellaneous demands. 





i 











2 



05 



-2 















.a 









<o 



o 











o 





& 



3 



^ 



i 



i 



o 



13 



pm 



CO 





§ 



1 



^ 

 ^ 



^. 



o.S 



^ 6 



II 



o 

 u 



II 





•■§ 



> 



% 



> 





ss 



s 







1^ 





OQ 



"A 



o 



m 



Ph 



H 



^ 



1^ 



Topograpkical Maps, .... 



167 



272 





218 



241 



106 



20,775 



21,215 



Revenue Survey Maps, .... 



233 



263 







297 



71 



22,370 



18,320 





6 



22 







8 



3 



6,664 



5,084 

 6,629 



Greneral Maps, 



42 



199 





46 



176 



44 



9,359 



City and Cantonment Plans, 



59 



104 



.. 



63 



122 



37 



8,580 



8,580 



Miscellaneous Maps, &c., . . 



362 



510 





536 



507 



190 



57,138 



82,515 



Proofs, 



, , 









, , 





5,932 





Photos, of Life Convicts, . . 



, , 





348 





. . 



, . 







Cadastral Maps, Bengal, . . 



56 











56 



2,800 



2,800 



Total, 



925 



1,370 



348 



863 



1,351 



507 



133,618 



145,143 



Cadastral Maps, N. W. P., 



2,113 



3,973 



•• 



•• 



4,047 



2,218 



99,450 



99,450 



Grand Total, 



3,038 



5,343 



348 



863 



t 

 5,398 



2,725 



233,068 



244,593 



* 20,962-00 square feet. 



1 22,027-40 square feet. 



