534 KEPOKT — 1891. 



system of colouring were adopted, the value of all previous maps 

 would be lessened, and the issuing of new ones coloured 

 according to the code adopted would entail enormous expense. 



New South Wales. 



Mr. C. S. Wilkinson being in England, Mr. E. Etheridge, 

 jun., replied that he did not believe in the possibility of unifica- 

 tion of colours, especially in countries where so little has been 

 done towards working out the equivalent formations as in the 

 Australasian Colonies. This Survey has just adopted a new 

 scheme of colours, which is not yet published (27th Novem- 

 ber, 18P0). 



South Australia. 



Mr. H. Y. Lyell Brown thinks it very advisable that a 

 uniform system should be adopted, and that the colours and 

 signs used on the Victorian maps might, as a whole, be 

 adopted by all the colonies ; but that the colours denoting the 

 formations of Secondary and Tertiary age would want modifi- 

 cation by a Committee. 



Tasmania. 



There is no Geological Survey in the colony, but the 

 Government has published a coloured geological map with 

 Mr. K. M. Johnston's " Geology of Tasmania." The colours 

 agi-ee generally with those of Victoria and South x'\ustralia. 



Western Australia. 

 No information. 



New Zealand. 



The colours and signs used in this colony were adopted in 

 the years 1885-86 ; but there are several differences between 

 the map and the table then issued. With the exception of the 

 crystalline rocks — massive and foliated — the colours differ 

 widely from those used in Australia, and the divisions also differ 

 much from those of the other Surveys. 



The following table shows the different divisions and 

 colours in use in the different colonies : — 



