lxxxiv President's Address 



all the coast line between these points, with the exception 

 of Cape Otway, is connected with the trigonometrical lines. 

 The line of the boundary between Sonth Australia and 

 Victoria is now being determined ; lines and trig, points are 

 being laid down in the north-west districts. The triangulation 

 of the northern plains is in progress. In the north-east of 

 the colony, Geodetic lines, with a secondary triangulation, 

 have been extended from Benalla to the Indi and Snowy 

 Ranges, and preparations are being made to connect by 

 triangulation the work going on in South Gipps Land, with 

 that in the north-east, across the great dividing ranges, of 



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which Baw Baw, Mount Useful, and the ranges about 



Wood's Point, form a part. Altogether 120 trigonometrical 



stations have been fixed, and their precise latitudes and 



longitudes obtained. 

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The construction of a new map of the colony, from the 

 work already done by the geodetic surveyors, is in progress : 

 and the whole topographical work connected and fixed by 

 this survey is being laid down to a half inch scale in 

 " divisions " containing one square degree, . of which there 

 are thirty-one contained in the colony. 



Another great scientific work carried on by a Government 

 department, under the direction of a member of the Council 

 of our Society, is Mr. Selwyn's Geological Survey of Victoria, 

 — a work of which this colony may well be proud, and which 

 cannot fail to be of the highest advantage in all future time 

 to the colonists engaged in undertakings requiring a know- 

 ledge of the structure and composition of the earth, and 

 the distribution of the mineral riches of the country. 



From personal experience of the British Geological Survey, 

 in which I at one time took part myself, I can confidently 

 affirm, that the Geological Maps issued by the Victoria 

 Survey, are equal to any in the world, and superior to most 

 works of the kind which have been published, in the admi- 



