...speculation seems now to have become necessary. . . . . . It is quite certain that a great mistake has been made — that British popular geology, at the present...limited to 100,000,000 years (a period to which Sir W. Thomson's calculations tend to show it may be restricted), no great reform in geological speculation...

...speculation seema now to have become necessary." "It is quite certain that a great mistake has been made, — that British popular geology at the present...opposition to the principles of Natural Philosophy"*. IN reviewing the course of geological thought during the past year, for the purpose of discovering those...

...have become necessary."' " It is quite certain that a great mistake has been 1869. Geological Time. made, — that British popular geology at the present...opposition to the principles of Natural Philosophy." The first of these is perhaps, if taken alone, rather vague, and therefore somewhat sensational. But...

...spéculation seems now to have b« cessary." »It is quite certain that a groat mistake bas been made, — tba popular geology at the present time is in direct opposition to the prie Natural Philosophy"*. IN reviewing the course of geological thought during t year, for the purpose...

...speculation seems now to have become necessary." " It is quite certain that a great mistake has been made, — that British popular geology at the present...opposition to the principles of Natural Philosophy." l IN reviewing the course of geological thought during the past year, for the purpose of discovering...

...speculation seems now to have become necessary." " It is quite certain that a great mistake has been made, — that British popular geology at the present...in direct opposition to the principles of Natural Philosophy."i IN reviewing the course of geological thought during the past year, for the purpose of...

...necessary." "It is quite certain that a great mistake has been made, — that British popular geolopy at the present time is in direct opposition to the principles of Natural Philosophy." ' IN reviewing the course of geological thought during the past year, for the purpose of discovering those...

...constituting perhaps a majority of British geologists. It is quite certain that a great mistake has been made — that British popular geology, at the present...opposition to the principles of natural philosophy. Without going into details, I may say it is no matter whether the earth's lost time is twenty-two seconds,...

...constituting perhaps a majority of British geologists. It is quite certain that a great mistake has been made — that British popular geology, at the present...opposition to the principles of natural philosophy. Without going into details, I may say it is no matter whether the earth's lost time is twenty-two seconds,...

...seems now to liaire become necessary." "It is quite certain that a great mistake has been made,—that British popular geology at the present time is in direct opposition to the principles uf Natural Philosophy."* It surely is a matter of paramount importance for the British geologists (some...