NOTICE. 



east end of the Salt-range. In this range these nummulitic 

 deposits are, at least locally, in transitional relation with 

 upper mesozoic rocks (Mem., XIV, p. 103), and Mr. Wynne 

 sometimes (Rec. X, p. 113) classes them as lower nummu- 

 litic. There is thus a strong presumption that the older 

 nummulitic deposits are represented at Subathu, and it was 

 to those bottom beds that the name Subathu was especially 

 applied, including any overlying deposits with marine num- 

 mulitic fossils. Mr. Wynne's first acquaintance with recog- 

 nised Subathu beds was near Murree, where the upper beds, 

 transitional with the Murree (or Dagshai ?) group, are well 

 exposed, the bottom limestones being at the same time 

 greatly expanded; and he has ever since endeavoured to 

 restrict the term Subathu to the upper beds : a conspicuous 

 instance of this occurs in the present Memoir, p. 56, where 

 he-speaks of " the nummulitic limestone and Subathu beds," 

 the bottom bed of the latter being a coarse conglomerate of 

 nummulitic debris, shown (pp. 19, 20) to be at least in part 

 post-eocene. It is apparently the same rock as at the dis- 

 puted unconformity in the Salt-range ; and it might be con- 

 founded with the conglomerate placed as " Siwalik ?" resting 

 unconformably upon triassic rocks (pp. 60 — 62). If there 

 were a distinct proposal made to sub- divide the original 

 nummulitic group of Subathu, in the west if not in the 

 east, the position would be intelligible ; but as it is, there is 

 manifest confusion, against which Mr. Wynne should have 

 forewarned the reader. 



H. B. MEDLICOTT, 



Superintendent, Geological Survey of India. 

 Calcutta, 

 January 1880. 



