National Collection of Type Cultures. R. St John Brooks. 239 
sufficient importance to be maintained in the collection. Cul- 
tures will be supplied on demand, so far as possible, to workers 
at home and abroad and, as a rule, a small charge will be made 
to defray the cost of media and postage. 
Annual lists of the fungi in the collection will be published 
in the Transactions of the British Mycological Society. A set 
of type slides of fungi will be kept in the Botanical Department 
of the British Museum (Natural History) in addition toa working 
set at the Lister Institute. 
NOTES ON MALAYAN MYCETOZOA. 
By A. R. Sanderson, F.L.S. 
The part of the Malayan Peninsula dealt with in the present 
paper lies between North Latitude 1° and 6° and East Longitude 
100° and 104°. It is a long narrow spit of land pointing south. 
An irregular ridge of mountains extends from north to south 
of the peninsula, some of the peaks rise to over 6000 ft., but all 
are clothed to the summit with tropical forest. 
The climate throughout the year is warm, moist and equable; 
the rainfall is abundant and not confined to any one season 
(see notes on rainfall below), the tropical vegetation is luxuriant. 
Apart from gatherings by Haviland, Burkill, Chipp and 
Sappan, very few records for Mycetozoa in Malaya existed prior 
to 1918. Although a considerable number have been added 
since, the present paper cannot claim to be more than a pre- 
liminary report, the observations as noted being records made 
at odd moments and at more or less irregular intervals; they 
merely indicate what a fruitful field awaits the enthusiast who 
has ample time at his disposal to investigate the distribution 
in the tropics not only of Mycetozoa but of fungi and cryptogams 
in general. 
Before proceeding to deal with the various species of Malayan 
Mycetozoa and their habitats, it is advisable to consider the 
peculiar conditions prevailing in Malaya, more particularly along 
the western half, that is over all of the peninsula bounded on 
the east by the natural barrier of mountains. 
Large tracts of tropical virgin forest have been cut down, one 
might almost say ruthlessly destroyed, in order to clear land 
chiefly for the purpose of planting rubber trees, Hevea brasili- 
ensis. It is likely that further portions of forest will share the 
same fate in the near future, especially in the states of Pahang 
and Kelantan which lie in the eastern half of the peninsula. 
Probably over one and a half million acres of the land which 
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