and Laboratory Methods. 



2329 



are produced, unless indeed in exposition buildings the dimensions are all so 

 enormous as to preclude any possibility of dwarfing. If it is necessary to exceed 

 this limit, viz., three times the width, in length, then the broader halls of course 

 furnish the best results. In museums where segregation and isolation are aimed 

 at, and subdivision is carried so far that the corals, the Crustacea, the star-fish, 

 etc., are given separate installations, much smaller halls may be used, but views 



Fig. 27 c. 



on that theory of construction have been sufficiently emphasized in other sec- 

 tions of this article. There is in Art Museums a quite necessary partition of 

 exhibits of the same general character, where the work of a period, or a factory, 

 of one artist or of one designer are kept apart, and a kind of chamber effect is 

 produced by small rooms devoted to these subjects. Indeed, in art a concentra- 

 tion of interest and attention is secured by the isolation of masterpieces, but it 



