28 



SCIENCE. 



[Vol. V., No. 101. 



contains full sets of nearly all the important 

 chemical journals ; and all the current journals 

 are received in exchange for the American 

 chemical journal, which is published under the 

 auspices of the Johns Hopkins university. 

 Books may be taken out of the library by any 

 one working in the laboratory. He is only 

 required to sign a receipt, and leave it with 

 one of the assistants, who acts as librarian. 

 Notwithstanding the freedom allowed in the 



The most advanced work, including the re- 

 searches, is carried on here. Most of the stu- 

 dents who occupy the places are looking 

 forward to taking the degree of doctor of 

 philosophy within a year or two. The instruc- 

 tion is under the immediate supervision of the 

 director of the laboratory, Professor Remsen, 

 whose private laboratory and office adjoin the 

 room. 



On the third floor the principal room is in- 



Fig. 4. — Research-room in the johns hopkins chemical laboratory. 



use of the books, only one insignificant volume 

 has been lost during the past eight 3-ears. 



Passing to the north end of this floor, we 

 enter laboratory C, or the research-room. This 

 is well lighted by windows on the north side, 

 as well as on the east and west. It meas- 

 ures fifty-three and a half by fifteen and a half 

 feet. It is perhaps the handsomest room in 

 the building. The walls are of cream-colored 

 glazed bricks, the color of which is relieved 

 here and there by a row of delicate blue. The 

 windows are large. The table-tops are of 

 black-walnut, the lower parts of light wood. 



tended for a chemical and mineralogical cabi- 

 net. It is furnished with cases, like some of 

 those used in the National museum at Wash- 

 ington. The object of the collection which 

 has been begun is not show, but simply in- 

 struction. A curator has recently been put in 

 charge, and it is hoped that before a great 

 while the results of his care will be apparent. 

 The idea which is to guide him is this : to get 

 together good specimens of all available sub- 

 stances which are strictly chemical, then such 

 minerals as illustrate the forms in which the 

 different elements occur, and, finally, specimens 



