C. L. Walton 
2d 7 
area is carried on in this district, and many lambs are “wintered.’’ 
Principal troubles, Husk, Warbles, damage by Fox (to fowls) and by 
Rooks (to crops), Rabbits, Wireworms and Flea Beetles, but it is seldom 
that any of these are very severe. 
(e) This is a continuation of (d) but reaching higher elevations; 
it may be called the “Coastal Uplands.” It is roughly a triangular 
region occupying the s.w. corner of the Area. A well marked ridge 
of high land occupies the coast and the remainder is hilly farming land, 
in places rough, in others good. Several streams occupy deeply cut, 
steep sided valleys. The rainfall is not particularly heavy (though 
official data are unfortunately lacking) and dry slopes, are the chief 
feature: Wireworm, Flea Beetle, and Rooks are the principal causes 
of complaint. 
(/) An ill defined region coming in to the s.e. of the Surveyed Area 
is known to myself as the “Wet Clayey Mountains.” It comprises an 
expanse of bare, ill drained high land with heavy rainfall. The wooded 
valley of the Ystwyth cuts through the N. and n.w. portion. It abuts 
upon (a) to the n. and n.e. and is separated from (e) by the Fridd ( b ). 
The Agriculture is poor and the chief disease Liver Rot. 
Methods of Work. 
The work of the Survey has b<?en carried out as follows: October, 
1913, to September, 1914. An enquiry was at once instituted to 
determine the occurrence of Liver Rot and the distribution of L. trun- 
catula, and a number of typical farms were visited in order to gain a 
close knowledge of local methods of Agriculture, more especially sheep 
farming. 
During 1914-15 the greater number of farms throughout the Area 
were visited and enquiries made regarding the Agricultural Zoological 
pests, and histories of these. 
The study of the distribution of L. truncatula was continued and 
very numerous observations were made from time to time at a number 
of field “Stations” and experiments conducted in the Laboratory in 
order to study the life history of the mollusc. 
In the final year, 1915-16, the visiting of farms was concluded and 
much time given to observations and experiments with L. truncatula. 
The distribution of Warbles and the species of Biting Flies, etc., were 
also given particular attention. Maps were prepared and the Report 
drafted. 
Throughout the whole Survey, first place has always been given 
Parasitology x 16 
