CORRESrONDIXG SOCIETIES. 35 



the survey, that the town of Cardiff" had purchased new maps, which had 

 been found to show only about one-half the present town. The survey 

 had been made ten years ago, and the maps were quite useless for the 

 purpose for which they had been purchased. 



Mr. Mills said that it was only fair to state that he had never written 

 to Stanford's for any map without receiving it by return of post. 



Mr. Gray was of opinion that the maps should be sent gratuitously to 

 schools. The children often had no idea of what a map meant, and they 

 should have the maps of their own districts on different scales, in order 

 that they might gain a better knowledge of geography. 



The Chairman stated that he had recently been to Clevedon, and had 

 been unable to procure the Ordnance map from the best shop in the town. 

 He had written to Stanford and obtained one in two days, and had found 

 that the map was twelve years old. 



Mr. Whitaker said that there was no difficulty in getting one-inch 

 maps with the contours printed on them, as the Ordnance Survey was 

 now engaged in producing such maps. The work required time, however, 

 as the copper plate of a one-inch map took a year to engrave. If the 

 Government could be forced into using photo-zincography the maps might 

 be produced more rapidly. He knew that nearly all the one-inch maps 

 were to be procured with contours, although not with hill shading. 

 Processes were now being tried at Southampton for printing in the hill 

 shading in a transparent ink which would not obscure the lettering, the 

 roads, rivers, or contour lines, &c. The chief delay occurred in the en- 

 graving, but the maps were always dated. With respect to the six-inch 

 maps, Mr. Whitaker said that local surveyors or anyone who could pace 

 accurately could fill in new features for themselves. In condemning a 

 map as being of no use, all that was meant was that the new features had 

 not been put on it, and that, of course, was bound to happen in growing 

 towns like Cardiff, Manchester, and Southampton. The Government 

 did not give the Survey the means of going over the ground again. The 

 only way of hastening matters and of insuring the insertion of the latest 

 features would be to influence the Treasury, which controls all the 

 Government Departments. 



Mr. Sowerbutts expressed his belief that the delay was mainly in the 

 method of producing the maps. He had been surprised at the facility 

 with which the Survey maps were produced in Brussels for about four- 

 pence each directly from the zinc plates. 



Mr. Kenward expressed his admiration for the one-inch Oi'dnanco 

 map. He said that he had made forty or fifty journeys on foot through 

 every part of North Wales and had never found the map at fault. 



Section G. 



Flameless Explosives. — Professor Merivale stated that there was 

 nothing new to report this year. The work was still going on, and next 

 year they would have something definite to bring before the Delegates. 



Mr. Mills said that the Chesterfield and Midland Counties Institution 

 had been carrying on similar experiments, and it was to be regretted 

 , that both institutions were spending money and time over the same 

 ' work. 



The Chairman expressed the hope that they would combine to carry 

 on the experiments together. 



D 2 



