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latest exponent in the eminent physiologist Professor O. C. 
Marsu, of Yale College, Connecticut, who, in his address read 
before the American Association for the Advancement of 
Science, on the “Introduction and Succession of Vertebrate 
Life in America,” uses these words,—‘‘ I am sure I need offer 
here no argument for evolution; since to doubt evolution to-day 
is to doubt science, and science is only another name for 
truth.” 
Mr. Srerex’s paper was followed by one by Mr. WrrcHett, 
entitled “Notes on a Section of Stroud Hill and the Upper 
Ragstone Beds of the Cotteswolds.” The paper was accompanied 
by a Section of Stroud Hill, a portion of Cotteswold geology of 
which no complete section has hitherto been given. It com- 
prised the series of strata from the Middle Lias to the Great 
Oolite, and the paper referred to the portion above the Upper 
Trigonia Grit, comprising the Ragstone beds described by 
Dr. Lycerr in his “ Geology of the Cotteswold Hills,” as the 
“Pholadomya Grit,” and by Professor Hunx in the Geological 
Survey of East Gloucestershire as “‘ Clypeus Grit.” 
The denudation of the escarpment of the Cotteswold range 
left the “‘Trigonia Grit” its uppermost bed; and the higher 
beds of the Inferior Oolite, not being much exposed in the 
escarpments of the river valleys, had not attracted so much 
attention as they deserved. 
Mr. Wircuett then described a series of beds, some of which 
were sterile, but one (the “Clypeus Grit” at Rodborough 
Hill) extremely fossiliferous—Terebratula globata being in the 
greatest abundance. Upwards of ninety species had been 
collected, of which fifteen were new. Most of the testacea 
appeared in the Trigonia beds below, but some were absent, 
hence the beds in their fossiliferous character were not identical. 
The sterile beds immediately succeeded the Coral formation of 
the Ragstones, which itself was formed upon the “ Trigonia 
Grit;” and as the Trigonia beds are remarkably fossiliferous, it 
was suggested that the change of marine conditions which 
preceded the Coral formation also led to the withdrawal of a 
large proportion of the mollusca of the Oolite sea, to return 
