240 Announcements and Inquiries. 



series, strongly overlapping and highly arched on their extremity, 

 so that the outline closely resembles Bolivina reticulata Hantken, but 

 also Bolivina dilatata Reuss, though both of these species have more 

 chambers in each series than does the present type. We are inclined 

 to think that this is a new species of Bolivina, though it may be 

 a variety of either of the above. We shall consider it, however, 

 a variety of B. reticulata as the reticulate surface might not show 

 in cross section. In length the specimen measures 0*26 mm." 



Here we see a very considerable uncertainty as to the determina- 

 tion of the species. 



We may safely say that the evidence from the foraminifera is in 

 favour of the chert in which they occur being, at earliest, Mesozoic. 

 Dr. Bagg himself remarks that, taken as a whole, the fauna is more 

 like that of the Trias than of the older Palaeozoic (p. 8). He has 

 apparently started with the assumption that the chert must be 

 Older Palaeozoic, thus (p. 8) he writes : " We do not know of any 

 such discovery in formations so primitive as these must be, and did 

 not suppose that Virgulina occurred in Palaeozoic horizons." One 

 does not know the strength of the evidence for this assumption. 

 It is, however, curious that, according to the description of 

 Dr. John M. Clarke in the Guide Boole to the Congres G'eologique 

 International (Guide Book No. 1, pt. i, 1913, p. 91, and map opposite 

 p. 88, 1913), the Bonaventure conglomerate lies almost horizontally 

 and is unconformable to all other rocks in Gaspe. One wonders 

 if the conglomerate is really as old as is supposed. There are but 

 three possibilities — (1) that many of the foraminifera have been 

 wrongly determined, (2) that the Bonaventure conglomerate is not 

 older than Mesozoic, (3) that foraminifera are quite useless for 

 stratigraphical purposes. Which of these possibilities are true 

 perhaps time will show. 



R. L. Sherlock. 



Af.ril, 1922. 



ANNOUNCEMENTS AND INQUIRIES. 



Mr. W. Whitaker, F.R.S., would be glad to have information 

 concerning the Water Supply of Dorset, for use in a Memoir of the 

 Geological Survey, now in preparation. Accounts of wells, springs, 

 mineral waters, water analyses, etc., will be acceptable. The con- 

 tents of journals of wide circulation, and of well-established local 

 periodicals, such as the Proceedings of the Dorset Field Club, are 

 already available to him, but he believes that there exist many 

 little-known provincially published works, as well as a large mass of 

 unpublished information, that would be very useful. 



New address : Wellesley Court, Wellesley Road, Croydon. 



