Geology. 247 



vealed some new and interesting facts concerning their genesis. 

 The solutions that deposited the great bulk of the Tonapah ores 

 were, it is believed, exudations from cooling buried bodies of 

 igneous rocks. The earliest minerals deposited included sphal- 

 erite, galena, chalcopyrite, arsenopyrite, pyrargyrite, polybasite, 

 argentite, electrum, quartz and carbonates. Subsequently some 

 change in conditions caused certain of these minerals to be. 

 replaced by others also derived from the ascending solutioDS. 

 The galena and to some extent sphalerite, quartz and polybasite 

 of the earlier deposition became unstable and were replaced by 

 argentite, chalcopyrite, carbonates or electrum. This sort of 

 replacement has not been recognized often before, probably 

 because the methods of microscopic study necessary have only 

 recently been developed. Later, these primary ores were exten- 

 sively modified by surface oxidizing waters with the develop- 

 ment of a series of secondary minerals. There is evidence that 

 such oxidation occurred at several different periods, w. e. f. 



3. Review of Geology and connected Sciences. — The Societe 

 Geologique de Belgique, through its General Secretary, M. Paul 

 Fourmarier at Liege, has recently announced its plan of con- 

 ducting a geological review having the above title for abstracts 

 of English and Scandinavian papers; while it would be known 

 as the "Revue des Sciences minerales" for those of French, 

 Italian, Spanish or Portuguese origin. The review would cover 

 all the branches of geology and the sciences immediately related, 

 giving concise summaries of published papers for which a rea- 

 sonable honorarium would be allowed. It is intended to publish 

 it monthly and in numbers of 32 pages or more for an annual 

 subscription temporarily fixed at 45 francs. 



II. Miscellaneous Scientific Intelligence. 



1. The Whole Truth About Alcohol; by George Elliot 

 Flint. Pp. xii + 294. New York, 1919 (The Macmillan Co.) .— 

 "The Whole Truth About Alcohol" is a protest against national 

 prohibition as a "measure for safeguarding a few hopeless 

 inebriates, unquestionably defective," and in so doing "enor- 

 mously inconveniencing as well as injuring the health and happi- 

 ness of practically the entire population." In maintaining 

 this hypothesis, Mr. Flint "tries not to be dogmatic, disagree- 

 able, unjust or intolerant, while upholding the truth at any price 

 and regardless of whom it may hurt." How consistently he 

 carries out this well-intended purpose may be inferred from 

 the statement (p. 157) that "it is true that the laboratories tell 

 us that alcohol does not exhilarate ; but we do not care for 

 laboratories. "We feel that we are exhilarated and that suffices." 



Having discarded laboratories, Flint indulges in this form of 

 reasoning (p. 146), "The cheap liquors (the most intoxicating) 

 contain fusel-oil. It acts with many more times the intensity 



