270 



BOTANICAL GAZETTE 



[APRIL 



In preparing an outfit of apparatus for field use I have devised a con- 



down 



great measure solves the question of a practicable field balance. 



The balance proper and the case are entirely independent. From a 

 reliable instrument maker I ordered a good type of laboratory balance 

 fitted with the usual accessories but without the glass case. The pillar is 

 fastened to the box with screws having milled heads and is readily remov- 

 able. All the metal parts of the balance can be detached and packed 

 safely in the drawer of the box. 



The case for this balance is made in six sections, of which those forming 



^^<^- 2. — Case collapsed and balance packed. 



the ends are secured in place on the base by dowel pins. The joints of the 

 case are made dust proof by means of a tongue-and-groove fitting. The 

 door IS hinged at the upper corners by means of pivot hinges and swings 

 outward. After all the sections are in place, complete stability is secured 

 by means of small hooks and screw-eyes which lock the various parts 

 together. Instead of glass, clear celluloid is used, which renders the case 

 practically non-breakable. 



"If ■■ « A 



fis 



1 -^ '^^»- «-i|j vtiiiiiii m^ vast wiii^Li x^ ^* / • - 



snows the case collapsed and balance packed. The total weight of balance 

 aJid case is approximately ten pounds, and in the collapsed form may 



'/ 



earned in a trunk 



W 



