34 HEVIEWS. 
either of the greenhouse or a cold dry frame or pit, in which place it should be 
cautiously watered. 
The V. pulchella, or sweet-scented Vervain, is a plant of much beauty, and is well 
adapted for planting- in beds in the flower-garden ; its flowers are pretty, and emit 
an agreeable fragrance when growing in the open air or in the greenhouse ; in 
either place it will thrive well, but of the two it is more calculated for the flower- 
garden, as, when grouped together, the efl'ect they give is much better than when 
standing singly in pots. This also is easily propagated either by layers or by 
cuttings of the ripened wood, which should be planted in sand, and placed under a 
bell glass ; any rich soil will do for this purpose. 
Verbena rugosa, or wrinkled-leaved Vervain, is a hardy plant, and particularly 
showy, making a grand display of beauty when planted in beds in the flower-garden, 
for which it will be found well adapted. It thrives well in light rich soil, and may 
readily be increased by cuttings. 
The species spoken of above are all valuable plants, and should be in every 
well- arranged flower-garden. 
REVIEWS. 
1. THE COMPANION TO THE BOTANICAL MAGAZINE. 
"The proprietor of the Botanical Magazine has long been desirous to combine 
with that work a supplementary portion, destined to include various information 
relating to botany and botanical travellers ; to be edited by the talented Dr. 
Hooker, author of the above, to be continued in monthly numbers, each number to 
contain two sheets of closely printed letter press, and two partially coloured plates ; 
separate Is. 6d., or stitched with the magazine 1*., thus making in the whole, 
including a coloured number of the magazine, 4^. 6d. From the editor's extensive 
correspondence, and frequent intercourse with scientific botanists and travellers of 
almost every part of the world, a constant supply of novel and entertaining inform- 
ation will be insured, which will be found extremely useful to the botanist, and 
interesting to the general reader." This work we can safely recommend as one 
of interest and extensive utility ; but to enable our readers to judge of its merits 
we make the following extract, from the sixth number, upon the uses and properties 
of the coca. " The coca, {Erythroxylon coca of Lamarck,) is a shrub of six or 
eight feet high, and to the eyes of an individual unpractised in botany, presents 
the general appearance of a straight-growing black-thorn bush ; its numerous small 
white flowers, and the pleasing green of its leaves, occasioning this similarity. A 
large plantation of coca, while in this state, is an agreeable object, though less 
beautiful than a well kept coffee ground. The frequent stripping of the foliage of 
