54 
TRANSPLANTING. [chap. iii. 
number of spongioles. If it were possible to 
transplant without injuring the fibrils, and if 
the plant were immediately supplied with 
plenty of water, shading would not be re¬ 
quired ; and, indeed, when plants are turned 
out of a pot into the open garden without 
breaking the ball of earth round their roots, 
they are never shaded. The reason for this 
is, that as long as a plant remains where it 
was first sown, and under favourable circum¬ 
stances, the evaporation from its leaves is ex¬ 
actly adapted to its powers of absorbing 
moisture; it is therefore evident, that if, by 
any chance, the number of its mouths be 
diminished, the evaporation from its leaves 
should be checked also, till the means of 
supplying a more abundant evaporation are 
restored. 
The use of watering a transplanted plant, 
is as obvious as that of shading. It is simply 
to supply the spongioles with an abundance 
of food, that the increased quantity imbibed 
by each, may, in some degree, supply their 
diminished number. 
All plants will not hear transplanting , and 
those that have tap-roots, such as the carrot, 
