and exact researches in this subject have given him a world-wide reputation, will 

 contribute some liberally illustrated articles on The Practical Applications of 

 Explosives. 



RECENT RESEARCH WITH THE X RAYS. 



While much has been published about the wonderful qualities of the X rays 

 and their capacity of adaptation to the wants of man, as yet but little is really 

 known about them. The study of the phenomena is still going on, and is contin- 

 ually exhibiting new features and suggesting new objects on which they may 

 be brought to bear. As a part of the record of these things, Professor Trowbridge, 

 of Harvard University, will contribute an article describing some remarkable 

 results of later investigations in the Lawrence Physical Laboratory, of which he 

 is director. 



THE RACE QUESTION. 



The question of the adjustment of the relations of the races will be considered 

 as offering some of the most serious and immediate difficulties our people have to 

 confront, and one to which the thoughts of the best students of affairs are anxiously 

 directed. Among the articles bearing upon this subject will be several by Prof. 

 N. S. Shaler, of Harvard University, dealing with various aspects of the negro 

 question. Professor Shaler spent his early life in the South, and knows the colored 

 man well. 



SCIENCE AND THE LAW. 



Questions concerning methods of dealing with criminals will be discussed as 

 of no less importance and equally fraught with dangers. The first article bearing 

 on this subject, to be published in an early number, will be on the decline of our 

 criminal jurisprudence, by a member of the New York" bar. it will expose the 

 urgent need of an infusion of scientific ideas into this exceedingly important branch 

 of legal practice, and will present some facts illustrating the dangerous state into 

 which it has fallen under the present antiquated systems. 



CURIOSITIES OF NATURE. 



No subjects more quickly and universally enlist attention or hold it longer than 

 those of natural history. From the apparently inexhaustible store of novelties it 

 affords, the curious blind fishes of North America— those remarkable products of 

 retrograde evolution— are marked for early description in an article, accompanied 

 by numerous illustrations, from the pen of Prof. Charles Ligenmann, who has 

 made a special study of these fishes and is the acknowledged authority respect- 

 ing them. 



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