306 BOTANICAL GAZETTE [APRIL 
simpler uses, these answer perfectly; but when several pieces must be 
supported near together, and when some articles must be set level, and 
especially where the whole must be removed from greenhouse or 
wardian case to lecture or laboratory table, it is necessary to improvise 
some form of tray or other support to carry the stands, with a device 
for leveling by wedges, etc. The new portable clamp-stand illustrated 
in fig. 2 is intended to meet all of these needs ina single instrument. It 
is made of thin cast steel, reinforced underneath on the margin and at 
the holes, and is some 40 X 22™ in size. It is perfectly plain on top, is 
provided with convenient handles, rests upon three legs in which 
leveling-screws are set, and is pierced by holes for the upright rods at 
points where experience and experiment show these to be most needed. 
The rods are of the size and thread usual in chemical! supports, two in 
number, one 50 and one 25™ long, though of course others can be 
added. The clamps, not shown in the figure, but to be illustrated in 
a figure to follow, are of a new form, light, strong, and firm, and are 
adjustable at any angle or in any plane.—W. F. GANONG, Worthampton, 
Mass. 
(Zo be continued.) 
