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THE JOURNAL OF BOTANY 
Blown Sand : . 10 14. Middle Lias Clay 
Chalky Boulder Clay 8 15. Modern River Gravel 
ornbrash . : 16. Old River Gravel 
Estuarine Alluvium 9 17. Oxford Clay ; 
Fen Gravel . i .fciiw 18s Peat. ¢ ; ‘ 
Great Oolitic Limestone 3 19. Plateau Gravel . 
. Hilbaldstow Limestone 3 20. Purple Boulder Clay 
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euper Mar. j ‘ . Rhetic Shale . 
22. Sandy Glacial Gravel 
23. Spilsby Sandstone 
. Upper Lias Clay . 
In all 93 records. 
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can be rightly judged to be a 
follower of man from its “frequency” alone. To obtain this 
‘frequency ” standard six signs are used to indicate varying states 
of commonness or.rarity. They are the following :—v. equals 
“very common,” c. equals “ common,” equals “fairly com- 
“ ve 2) 
locality, 7. e. state of circumstances on a soil, the species in ques- 
numbers with another plant of a different species; that would 
be simply aimless folly leading nowhere! It is quite true that 
valueless. Every species has to be compared with the accurate 
knowledge the botanist has gradually acquired of the general pro- 
ortion of numbers or frequency of the same species wnder all con- 
ditions of environment—on all soils and at all altitudes—wherever 
it has been observed to grow. 
Now, wh y a 
found on a hedge-side, I should certainly add the sign v.c. Two 
or three plants are what most localities supply, They move a 
little from season to season, as most plants do when they have 
