8 
INTROD UCTION 
Myrtaceae, Acacias, &c. are to be seen here. The Heath House or 
South African House contains Ericaceae, Epacridaceae, &c. from the 
S. Temperate zone. The Conservatory is usually a show house, the 
plants in which are perpetually changed to keep up a display of flowers 
all the year round. The names of the other cool houses explain 
themselves. 
The Arboretum contains specimens of trees and shrubs, most of 
which belong to the orders Coniferae, Juglandaceae, Salicaceae, Betu- 
laceae, Fagaceae, Ulmaceae, Magnoliaceae, Saxifragaceae, Hamameli- 
daceae, Platanaceae, Rosaceae, Leguminosae, Buxaceae, Aceraceae, 
Hippocastanaceae, Sapindaceae, Rhamnaceae, Vitaceae, Tiliaceae, 
Cornaceae, Ericaceae, Oleaceae, Caprifoliaceae. 
The Pond, Tanks, and Bog-garden contain the hardy water and 
bog plants, especially those of the native flora. See Chapter III. 
The Rock Garden contains most of the hardy alpine and rock 
plants. Many alpines refuse to grow out-of-doors at low levels, on 
account of the dampness of the winter, and must be cultivated under 
glass in the Alpine House for a portion of the year. See Chapter III. 
The Herbaceous Ground contains the smaller plants suited to 
ordinary out-of-door culture other than those requiring specially dry or 
wet situations. Here will be found representatives of most native plants, 
and foreign plants belonging to the same orders, and also many Com- 
melinaceae, Nyctaginaceae, Phytolaccaceae, Aizoaceae, Capparidaceae, 
Zygophyllaceae, Rutaceae, Loasaceae, Asclepiadaceae, Polemoniaceae, 
Hydrophyllaceae, Acanthaceae, &c. Each order has usually a bed to 
itself, and the beds are grouped according to some system of classification 
(that of Bentham and Hooker in several gardens). 
Visitors are not allowed to pick or handle specimens in botanic 
gardens, but in most of them specimens may be obtained for purposes 
of study by application to the Curator or sometimes to the Professor of 
Botany. At Kew there is a small Students’ Garden, where specimens 
may be picked. 
IV. BOTANICAL MUSEUMS. 
These are usually designed to illustrate Systematic or 
Economic Botany, or both ; in the former case, and often 
also in the latter, they are arranged according to the natural 
families of plants, but some of the best economic museums 
are arranged by products, usually on a system like that in 
Chapter IV. Many museums exhibit series of specimens 
illustrating types of vegetation, morphology of organs, floras 
of particular countries, &c. 
The student will find this book useful in the museum ; 
he should use the collections in connection with his general 
study and outdoor work, following up the various heads of 
