1904] COOLEY—BOTANICAL GARDEN AT NAPLES 439 
extreme north of Japan, North America on the east from Hudson 
Bay throughout the Alleghanies and on the west as far south as 
British Columbia. The range of latitude is from 30° northward; 
and the annual rainfall is 60-200°™. Europe: Picea excelsa, Pinus 
sylvestris; SIBERIA, AMOOR REGION, and NORTHERN JAPAN: Abies 
a, Cryptomeria japonica; Wrst coast or AMERICA: Chamae- 
cyparis nutkaensis; ALLEGHANY REGION: Pinus Strobus, Lirioden- 
dron tulipifera, Prunus serotina, Robinia pseudacacia, Celtis occi- 
dentalis, Tilia heterophylla, Gleditschia triacantha, Quercus nigra. 
4. The regions of winter rain or snow and heavy summer rains.— 
Countries included in this group are British Columbia, Central 
Japan, and parts of Chile. The range of latitude is 40°-50°, and the 
annual rainfall is 130 to over 200°". Examples of these regions are 
as follows: Britis CoLumsrA: Chamaecyparis nutkaensis; CHILE: 
Araucaria imbricata; CENTRAL JAPAN: Chamaecyparis _pisifera, 
Torreya nucifera. 
5- All the months of the year rainy, the most in winter, but no 
month without fifteen rainy days.—The southern part of New Zealand 
is the only region where this condition holds. No trees of the garden 
are surely from this region, unless possibly a Dacrydium sp. 
- All the months of the year rainless, at least with less than six 
days of rain.—Under this group come the deserts of the Sahara, 
central Asia, central Australia, Arizona, and southern California. 
The latitude range is 20°-50°. This region is that of least rain, 
never more than 60°™ falling annually. OAsES OF THE SAHARA: 
*hoenix dactylifera; Gost: Tamarix articulata; ARIZONA: tree 
yuecas and agaves. 
7. Regions of the normal rainy season of the tropics and subiropics, 
with some drouth in winter and spring—The countries included 
“te China, Japan, India, the East Indies, New Guinea, eastern 
Australia, southern Florida, the Mexican plateau, the West Indies, 
Central America, Peru, Brazil, and Argentine Republic. This region 
includes the monsoon forests of India and Brazil, where the annual 
Tainfall exceeds 200°™, the latitude ranging from the equator to 40°. 
The trees Selected from the garden to represent this region are as 
Ws: Cutna: Camphora officinalis, Ginkgo biloba, Cephalo- 
Taxus Fortunei, Chamaerops excelsa, Livistona chinensis; JAPAN: 
