May 28, I860.] ORDNANCE SURVEY. 159 



should be tlie 6-incli scale ; and tlie plans on the 25*344-inch scale 

 reduced to the 6-inch scale, to make the county plans uniform on 

 one scale ; and again reduced to the 1-inch scale to complete the 

 1-inch map of the United Kingdom. 



The work of making these reductions, which was formerly a 

 tedious and expensive operation, has been so simplified by the 

 introduction of photography for the purpose, that the whole series 

 of plans now produced do not cost more, if, indeed, quite so much, 

 as the 6-inch plans of Ireland formerly did. 



The Eeport then details the progress which has been made in 

 the survey on these scales in England, Ireland, and Scotland ; and 

 we learn that as regards England, the six northern counties, viz., 

 Yorkshire, Lancashire, Durham, Westmorland, Cumberland, and 

 Northumberland, will be finished within this financial year. The 

 plans of the last two counties are now in course of publication, 

 and large parties of surveyors are employed in completing the 

 survey of them ; that of the 1-inch map of England and Wales will 

 also be nearly finished this year. 



That the 6 -inch maps of Ireland have all been reduced to the 

 1-inch scale, and that they will all be engraved in outline in the 

 present year, although some time must elapse before all the hill- 

 features are sketched and engraved upon them. More than one- 

 third of the hill features are, however, already sketched, and 

 several sheets engraved with the hill features on them ; and as the 

 director of the survey will soon have the draftsmen engaged at 

 present on the north part of England available for the completion 

 of this work, we may confidently anticipate an early completion 

 of the 1-inch map of Ireland also. 



In Scotland we find that all the southern counties have been 

 surveyed on the large scale, and that the survey is now proceeding 

 in the counties of Perthshire and Forfarshire, and that a con- 

 siderable portion of these counties has already been finished and 

 published. The counties of Dumbarton, Stirling, and Clackmannan, 

 were finished during the last year. With the exception of the 

 narrow slip of cultivated country on the eastern coast of Scotland, 

 the surveyors have now before them only the mountainous districts 

 and the islands. 



All the plans of the southern counties have been reduced to 

 the 1-inch scale, and several of the sheets have already been pub- 

 lished on this scale. Duplicate electrotype-plates have also been 

 taken from some of the original copper-plates, and Sir Eoderick 



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