INTRODUCTION 



Some years ago Vlien one of the authors of this work was engaged in 

 looking np authorities upon tin deposits, no list of the papers on even 

 such noted occurrences as those of Great Britain, Germany, or the Mahay 

 PeninsuLa, was to he found, while it required much effort and continued 

 search to find what had been written upon Bolivia and the lesser known 

 localities. 



No monographic work covered the field, for many discoveries and great 

 developments had taken place since the appearance of the only compre- 

 hensive book, E. Beyer's " Zinn," in 1880, and his bibliographic references 

 were often indefinite and far from complete. There seemed to be real 

 need for an extensive bibliography, and during five j^ears one or both 

 authors have been engaged a considerable part of the time in the col- 

 lection and digestion of material for such a publication. Since the work 

 M-as begun Sydney Fawns' " Tin Deposits of the World " has appeared, 

 but the list of authorities given is not extensive. 



Owing to the circumstances under which the work was done the notes 

 upon the papers listed do not consistently follow one plan. Little 

 attempt has been made to digest works in foreign languages. Of those 

 in English, some are digested, some have the contents noted, and, in a 

 few cases, where it conveys a good idea of tlie matter treated, only the title 

 is given. 



In digesting articles upon the geology of tin deposits it has been aimed 

 to give, where possible, (a) the country rocks, (b) age, (c) origin of the 

 deposits, (d) accompanying minerals, (c) economic importance, and (f) 

 otlier details of value. 



When desiring to consult the literature of tin deposits it is believed 

 tliat as a rule persons will wish to know about the tin-bearing veins, 

 dikes, or placers of a particular country or district, and in the arrange- 

 ment of this bibliography the works are, where possible, placed under 

 the names of the countries in which are located the tin deposits of wdiich 

 they treat. The names of the countries follow each other in alphabetic 

 order, and under each heading names of authors are in similar order. 



Smithsonian Miscellaneous Collections, Vol. 58, No. 2 



