INDIVIDUAL SPECIES. 4t 
surviving cultivation bodily,t and that on Area 6 especially it was 
less suitable for the new conditions created, and therefore suffered 
in competition with other plants. The Sp. fr. for the plant on 
this area at 54 years was very low considering that the area had 
not been under a cleaning crop, and the difference between this 
and the Sp. fr. for Area 7 at 44 years is very marked. In respect 
of this plant, Area 7 was again reverting much more rapidly than 
Area 6 towards the grass-heath condition of Area 8. 
OTHER ORDERS.* 
The plant unit in most of the species included under this 
heading is relatively large,? and as they rarely form a very large 
proportion of the herbage the P.c. fr. results are generally low. 
In most cases, therefore, the Sp. fr. method is more satlsfactory, 
and the discussion of these species will be mainly based on the 
Specific Frequency results. 
Results were obtained for a few species which are not 
included in the tables owing to the fact that their development 
was very small. Some of these were sown species. 
Cichorium Intybus (Exotic). 
The seeds of this plant were included in the seeds-mixtures 
for Areas 6 and 7 at the rate of 2lb. per acre. 
It had a P.c. fr. of o-r on Area 6 at 44 years, but otherwise 
was not recorded by this method. It bad Sp. fr. of 3 and 2 on 
Areas 6 and 7 at 5} and 44 years respectively, so that although 
not indigenous, it had persisted to some extent for over five years, 
Poterium Sanguisorba (Exotic). 
This was sown on Areas 6 and 7 at the rate of 3lb. per acre. 
It was not recorded in the P.c. fr. examinations, but it had Sp. 
frequencies of 3 and 2 respectively on these areas, the former 
area examined at 54 years and the latter at 44 years. 
1 This is suggested by a comparison of Areas 2 and 3. 
*See Table V., p. 16% 
% Definition i,, pr Is 
