1916] 



Lawson: Correlation of Pre-Cambrian Rocks 



19 



belonged to an entirely distinct era — the Archean. Its history is a 

 record of physical movements which cannot be discussed in terms of 

 life, and the palaeontologists should refrain from insisting on their 

 nomenclature in a field in which they do no work. The labor of har- 

 monizing the views of geologists who know something of this great 

 field is difficult enough without having to struggle with an inappro- 

 priate classification injected by those who contribute nothing to the 

 solution of its problems. To me the terms Archeozoic, Early Protero- 

 zoic and Late Proterozoic 3 " are meaningless and confusing. Whatever 

 meaning they may have to anyone is necessarily visionary ; and I ques- 

 tion the advisability of teaching visions to beginners in geology. 



so Pirsson and Sehuchert, Textbook of Geology, Pt. II, pp. 444-445, 1915. 



Transmitted March 30, 1916. 



