108 PROCEEDINGS COTTESWOLD CLUB 1903 
up the valley, that the plants now found in the small plot 
of boggy ground are the remnants of a greater marsh ; and 
these probabilities are evidenced by Carex faludosa grow- 
ing below, and thereby shewing signs of the presence of 
peat, and by the presence of Lzstera ovata in the little 
marsh itself. 
There are three or four plots of boggy ground with a 
somewhat similar combination of plants in Oxfordshire ; 
two in Buckinghamshire, and five or six in Berkshire. 
The Scirpus caricis is absent from those in Bucking- 
hamshire; but at Cothill, Berkshire, the Drosera (Sun- 
dew), which is absent from Sevenhampton Common, is 
found, and moreover fairly close to the Pzuguzcula, the 
lime in the soil ceasing where the Drosera begins to 
grow. Both the Drosera and the Marsh Violet, which 
are found on May Hill and in the Forest of Dean respec- 
tively, are absent from Sevenhampton Common, because 
these plants like humic acid, which is usually absent from 
the limestone. 
Compared with bogs in other parts of England, too, it 
may be said that Carex paniculata is unusual above 
600 feet, nor is Sczvpus cariczs found usually as high as on 
Sevenhampton Common, zzz., at an altitude of 800 feet. 
Since the above remarks were written a visit was made 
to the Gloucestershire locality of Cephalanthera rubra, 
and we were fortunate to find it in good flower, which 
showed how very incorrect is the present plate in English 
Botany. The occurrence of this orchid and of Stachys 
alpina, two plants which are practically limited in Great 
Britain to this county, is very interesting, seeing that the 
two plants, which are natives of France and Switzerland, 
exist here as such remote outliers that it is difficult to 
explain the origin of their occurrence in Gloucestershire. 
The plants were found growing at an altitude of about 
600 feet. The soil on which the S¢achys was found was 
