160 THE VICTORIAN NATURALIST. 



to Baea, and recedes from most of its congeners ; — thus an 

 additional instance is given for demonstrating the intenability 

 of the genus Streptocarpus, it forming a section in Baea, like 

 Jankaea in Ramondia. As indicated by Mr. Bentham the 

 generic name Didymocarpus should undoubtedly be changed to 

 Roettlera, as well established by Vahl 82 years ago in commemo- 

 ration of the Danish missionary Roettler. 



I have connected with this very neat and rare plant the name 

 of Rob. Kinnear, Esqr., a strenuous promoter of horticulture at 

 our metropolis. 



CORRESPONDENCE. 



The Geology of the You Yangs. 

 To the Editor of the Victoriati Naturalist. 



Sir, — In the last issue of our journal, Mr. S. H. Wintle takes 

 exception to two sentences occurring in the account of the Club 

 Excursion to the You Yangs, appearing in the December 

 Naturalist. 



Will you kindly allow me, as the writer of the article, to reply 

 to his criticisms. 



Respecting the first quotation, I have to confess that, in writing 

 the account in a popular manner, I fell into the error of using, 

 for the detached masses of granite, the word " boulders," which, 

 as Mr. Wintle points out, in a geologic sense has quite a different 

 meaning. 



With regard to the second statement, I may mention that, not 

 professing much knowledge of geological formations, I had to seek 

 my information from other sources, and as a detailed survey of 

 this part of Victoria was made some years ago during the progress 

 of the Geological Survey, under the direction of Mr. A. E. 

 Selwyn, now of the Geological Survey of Canada, I naturally 

 considered it authoritative, and adopted the conclusions arrived 

 at then. 



The portion of country in question is mapped out in sheet 

 No. 20 on the scale of two inches to one mile, showing a large 

 area of " newer pliocene on granite" between the '•' upper 

 volcanic" of the plains and the " granite" of the ranges. The 

 map bears the inscription, " Geologically surveyed by Mr. 

 Richard Daintree, Field Geologist, 1861," which, combined with 

 the authority of the talented director, should be sufficient 

 guarantee of the correctness of the details recorded. Some 

 paleontological evidence of the age of the formation is obtain- 

 able in the locality, as the map bears one or two remarks, such 

 as " cliff section showing soft calcareous clay containing fragments 

 of bones." — I am^ etc , F. G, A. Barnard, 



Hon. Secretary F.N.C. of Victoria. 



