226 HEADQUARTERS OF SURVEY DEPARTMENT. 



During 1885-S6 a great deal of drawing and compiling work was 

 done for the Indian and Colonial Exhibition in London. A map 

 was prepared showing the import and export trade of India with 

 other countries, and a series of maps showing at a glance the 

 percentage of various crops grown in different districts of India, 

 with other maps showing density of population, religions, emigra- 

 tion, external trade, land settlement and revenue, and geology of 

 India was also completed. 



In the Lithographic Office a series of maps were prepared for Sir 

 E. Buck's Statistical Atlas of India, and the map of the Nizaoa's 

 dominions in two sheets on the 16-mile scale referred to above was 

 printed off. 



The following year (1886-87) was marked by a great demand for 

 maps of Afghanistan and Baluchistan, consequent on the events 

 on the Afghan frontier. Compilations from rough military recon- 

 naissances in Burma had also to be undertaken. The Engraving 

 Office lost the services of Mr. C. W. Coard, the superintendent, who 

 had been selected, together with a small staff of engravers, in 1868 

 by Colonel Thuillier, then Surveyor-General, to take up the 

 engraving of the Indian Atlas sheets. Mr. Coard had done excellent 

 work during his tenure of office, and had left the engraving 

 branch in a high state of efficiency. He was succeeded by 

 Mr. G. 0. Palmer. 



The work done in the heliogravure and collotype sections was 

 more satisfactory in quantity and quality than previously, both 

 processes having quite emerged from the experimental stage into 

 practical methods. A commencement was made in reproducing 

 archajological drawings for the use of art schools and also for the 

 illustration of the Journal of Indian Art. 



During 1887-88 greater strain was put on the geographical 

 drawing and compiling branch in consequence of the necessity 

 of preparing general maps of Burma and sheets of the N.W. 

 frontier, and it was with difficulty that sufficient material could be 

 got ready to keep the engravers employed. To remedy this it 

 was arranged that all the N.\Y. frontier mapping, except 

 Baluchistan, should be undertaken at the Trigonometrical Branch 

 Office at Dehra Dun, leaving the Burma maps to be dealt with in 

 the Calcutta Office. 



One of the principal features of the period under review has been 

 the introduction of the heliogravure processes for the direct repro- 

 duction of delicate drawings in line or of half-tone subjects of all 



