VI 
INTRODUCTION. 
after wliicli it proceeds in a spiral around the object held in its embrace. 
The strawberry-plant will thrust its runners completely across a garden 
walk on to a bed of soil on the opposite side ; where it will for the first time, 
as it were perceving its object to be gained, push out roots, and form a new 
plant. Trees are frequently found, which have taken root on one side of a 
deep ravine, and having exhausted the sterile soil on that side, have pushed 
their roots across the abyss, and having gained the opposite side, there struck 
deep into the fertile soil. 
The above few preliminary remarks are introduced for the purpose of 
showing the importance of studying this branch of science ; and in order to 
make the present volume as instructive, useful and entertaining as possible, 
the proprietors have made extensive outlays for the improvement of the em- 
bellishments, as well as the general appearance of the current volume ; and 
feeling grateful for the more than expected patronage they have received 
since the introduction of the work, they would return their sincere thanks to 
their subscribers, still asking a continuance of their patronage and co-opera- 
tion in extending still farther its circulation. 
