302 REPORTS OF RESEARCH COMMITTEES. 



to individual glaciers of thei mountain type known as " valle\ 

 glaciers." Reid's observations in regard to the Macintosh-Boco 

 glacier seems to suggest the existence of " piedmont glaciers." 



The relative ages of the glaciation and the development of the 

 West Coast peneplain has been finally determined, as some of the 

 moraines are well below the surface of the latter, but the exact 

 relationship between the glaciers and the uplift or uplifts 

 responsible for tlie existing cycle of erosion is still uncertain. 



LOFTUS HILLS, M.B.E., M.Sc, 

 Government Geologist, Gormanston, Tasmania. 



24th June, 1920. 



B. — Extract. 



Extract from a letter from Professor Walter Howchin, Ade- 

 laide : — 



" 22nd June, 1920. 



" I received your letter having reference to the Glacial Research 

 Committee report for the Hobart meeting. I really do not think 

 I have anything fresh to report. In our last short vacation I went 

 north to Quorn, and beyond, and in the rough country between 

 the latter and Port Augusta lit upon another occurrence of the 

 Cambrian glacial tillite, overlain, as usual, by the Tapley's Hill 

 shale and Brighton limestorie ; but, although I traced the beds for 

 several miles, I was unable, through want of time, to reach the 

 base of the tillite. I shall probably have to do the other end of 

 the section from Port Augusta. 



The Brighton limestone represented is a most remaikable rock. 

 It is oolitic in structure, and brecciated after the style of "desic- 

 cation " (or intraformational) conglomerate. The included frag- 

 ments are oolitic as well as the base, and, curiously, the larger 

 brecciated fragments include other breccias in smaller fragments 

 within them. Their structure is not of a limestone kind, but is 

 characteristic thi-oughoiit the limestone, which is very thick." 



C. — Glacial Notes from New Zealand. 



Among the most important observations made during the past 

 five years are those connected with the striated boulder discovered 

 by Professor Park in the valley of the Rangitikei River, in the 

 North Island. If this is definitely accepted as glacial, then its 

 presence will demonstrate the- existence of glacial conditions in 

 former times over a large area of the middle region of New Zea- 

 land. The conclusion as to the glacial origin of the boulder has 

 been strongly opposed by Trechmann (Geol. Magazine, 1917, p. 

 242), who considers that the scratches on its under surface have 

 been caused by the rock sliding down a steep, rough slope. While 

 it is difficult to accoimt fm- the presence of such a large boulder 



