NOTICE. 
—Our readers will note that we 
___ begin a new method in this issue 
*. anc j genc | our illustrations as sepa¬ 
rate plates. The expensive portion of these publica¬ 
tions is the cost of the illustrations. We wish to put 
them in such systematic shape that we will not have 
to re-issue the illustrations every time we want to 
review the plant, and we shall therefore issue our 
future illustrations in the form of consecutively num¬ 
bered plates. 
/ 
