ANNIVEKSAKY ADDRESS. 37 



important part in helping to consolidate the rubble." Professor 

 David in a letter to me says "The core is being worked out in 

 London by experts under Professor Judd, and in Sydney Uni- 

 versity by Messrs. Woolnough, Poole and David, and a geological 

 map and part of the atoll is being prepared by Mr. G. Sweet of 

 Melbourne. There is sufficient material already collected to throw 

 very great light on the mode of the origin of atolls : but in order 

 to try and settle the controversy definitely we are arranging for 

 a third expedition to leave Sydney for Funafuti shortly to finish 

 the bore on the island, and to put down a bore in the lagoon." 

 For this purpose the Government Works Department are lending 

 the necessary plant for boring in the lagoon, and the party will be 

 conveyed to the scene of action by H.M.S. Porpoise; while the 

 Government Department of Mines are lending a diamond drill 

 plant to complete the six hundred and ninety-eight feet bore. 

 The party will proceed to Samoa by mail steamer, whence they 

 will be conveyed to Funafuti in the London Missionary Society's 

 steam-yacht John Williams. 



New Colony Map. — Mr. Twynam, the Chief Surveyor of the 

 Department of Lands, informs me that a new map of the colony 

 of New South Wales has been constructed in the Survey Branch 

 of his Department, and will shortly be published ; it is to the 

 scale of eight miles to an inch, and the size of the mounted map 

 will be about nine feet six inches by seven feet six inches : the 

 construction is on a conical projection, and is based upon points 

 determined by astronomical observation at stations on the main 

 telegraph lines, an eighteen inch altazimuth instrument being 

 used, and the longitudes determined by time signals from the 

 Sydney Observatory, with which is incorporated the triangulation 

 so far as it has extended, i.e., over the southern counties of the 

 eastern watershed, and say a hundred miles westward thereof^ 

 The map was designed with a view to engraving, which, it is hoped 

 may be accomplished in due course ; it will then be a fitting 

 accompaniment to the fine engraved maps of the colony of Victoria 

 and Continental Australia, which were both produced in the 



