MIRACLES OF SCIENCE 



note of some accomplishments that are not named in 

 any of the lists already given. The German publica- 

 tion "Prometheus" celebrated its twenty-fifth anni- 

 versary in 1912, and the editor, Professor Witt, was 

 led to comment on the changes in the world of 

 science that have taken place in the quarter century 

 since the journal was founded. He pointed out that 

 a number of the chief quests of the workers of 

 twenty-five years ago, which then seemed almost 

 hopeless of solution, have been triumphantly achiev- 

 ed. 



As cases in point he named the following: (1) the 

 dirigible balloon, (2) the aeroplane, (3) the sub- 

 marine boat, (4) the attainment of the North Pole 

 (had he written a few months later, he might have 

 included the South Pole also) and the absolute zero 

 of temperature, the latter approached within a little 

 over one degree, (5) wireless telegraphy, (6) the 

 transmission of photographs by wire, and (7) color 

 photography. It is curious to note that of the seven 

 "wonders" named here, only two duplicate citations 

 of the other list, so wide is the opportunity for 

 selection. 



THE NEW ERA 



Were we now to collate the diverse summaries, 

 making allowance for duplications, we should find in 

 the various lists cited more than thirty very notable 

 scientific achievements any one of which by itself 

 would give a certain distinction to an epoch. It has 

 been the purpose of this book to give some details 

 regarding the development of many but by no 



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