PREFACE. 



This is similar to my ludex to the Literature of the Spectroscope, 

 published in the Miscellaneous Collections of the Smithsonian Institution, 

 vol. XXXII, for 1888. 



All of the titles are given in full in the author-index ; but in the suli- 

 ject-index, to save useless repetition, only the authors and the places 

 where their works are to be found are given — except iu the case of books. 



Applications of thermodynamics have been found, and kept, to the 

 number of more than double the titles here given. They were omitted so 

 as not to overload the index with matter of little or no use. But, of 

 course, no titles have been left out which belong to the applications 

 named in the table of contents. 



The work has been brought down to the middle of the year 1889. 



Alfred Tuckerman. 



l^EWPORT, E. I., 



July, 1890. 



(iii) 



