70 E. 0. Teale: 



. Notes on the Maps. 



Wellington District, Map 1. 



The area contained in Map 1 comprises about 9i) square miles of moun- 

 tainous country in a region previously unmapped geologically, except for » 

 sketch map by Reginald Murray, issued in 186i, scale, 2 miles to an inch. 

 Though the topography was roughly sketched in by him from main 

 vantage points, very little of the area included in thia map was examined 

 geologically, hence as the margins of this region were mainly Upper 

 Pailaeozoic, he assumed that these rocks probably covered the whole area. 

 A land survey was made some years ago of a Uraited portion centring round 

 the serpentine rocks. The blocks were not permanently taken up, and 

 only about one boundary fence was ever put up, so that very few points 

 or lines other than parts of the Wellington and Dolodrook river courses 

 could be definitejly recogni.sed in the field: Tliese. however, were made 

 use of, and formed the basis from which the existing map was constructed. 



The important central portion, which includes the Cambrian and Ordo- 

 vicia.n inliers, has been accurately traced and mapped. The outlying topo- 

 graphy has been determined approximately bv a combination of rapid com- 

 pass traverses, assisted by plane table methods from suitable vantage 

 points. 



Hichnjs Creek Rrgion, Map 3- 



The only topographical basis for this map was the position and course 

 of the Macallister River, obtained from the county map. The road was trar 

 versed by myself, and tlie rest of the features sketched in — in part by 

 plane table methods and rapid compass traverses. Murray's Sketch Map 

 also included this district, but no details concerning important structural 

 features were shown. 



Noica-Nmva — BucJian District, Map 4. 



This is another area little known geologically, with a very imperfect 

 topographical basis to work upon. The main streams, such as Boggy 

 Creek, Ti-Tree Creek, Yellow Water Holes Creek and Tara Creek, have 

 been definitely located by Government sur\eys, and the roads and settler's 

 blocks as indicated provide some fixed points from which to work, but 

 practically tlie whole of the Tara Range, from its termination in the S.E., 

 near Mt. Nowa-Nowa, to where it passes out of the map in the N.E., has 

 only two fixed points shown in any of the existing maps, namely, the two 

 trigonometrical stations of Mt. Nowa-Nowa and Mt. Tara. 



The only other geological map which includes this area is the general 

 ma,p of Victoria, 8 miles to an inch. I understand tliere are some unpub- 

 lished sketch maps in the hands of the Geological Survey of Victoria, upon 

 which this portion of the general map was based, but I have not seen 

 them. 



The author spent about five weeks in this district, which covers an area 

 of about 2<X) square miles. It was traversed on foot, single handed, so that 

 though the boundaries indicated are all my own, they are necessarily only 

 very approximate. 



