FOLLOWERS OF MAN 925 
exhausted the soil, but practically never _ beyond a well- 
defined limit. I have never seen it in masses even in herb gar- 
dens. Plants with such frequency—unless Shey are a. 
a invariably followers of man, or of cultivat 
as follows. Notes to —e table will be found in the text below it 
under given letters : 
1. Blow 8: 4 ie hb. 
2. Chalky Banliak Clay. I, 19 (a) ; II, 12 . 31 
3. Cornbrash. if & ; : 
4, pea heats I, 9; IL, 15 (b) . to 
5. Fen Gravel. I, 3; II 1 ; si 
6. Tish water Alluvium 1 I, z (0) 7 
7. Hessle Boulder Clay. I, 0; IT, oe 
8. Hilbaldstow Limestone. I, 0; II, 1 HER 
9. Kellaway’s Rock. I, 1; II, peHE | 
10. Kimeridge Clay. I, 3; II, 0 bane 
11. Kirton Limestone. I, 1; is oe 
12. Lincolnshire Limestone. ko ke 3 
13. Lower Lias Clay. I, 3(a); II,2 . “ie 
14. Made Ground (d). I, 3; II,1 ; ie 
15. Marlstone. I, 2; II, oe 
16. Middle Lias Clay. I, 0; II, 1 Leas | 
17. Modern River Gravel. I, 1; II, 2 ee 
18. Old River Gravel. I, 2; II, 2 _ * 
19. — oa. i 8 12(a); il; 9 . 1é 
20. Pea Bae 
21, tenet Gracal be eat i wage 3 
22. Purple cecal Clay. a 1; I, 0. rare: 
23. Sand and Gra ; Be 
24, Sandy Glacial Gravel, Be 12 (a) ; II, Ai fe). y 29 
25. Silt and Clay. I,1; II,1 . : : hone le 
26. Spilsby Santseshe. ahs tly A te 
27. Upper Chalk. I, 1; II, 1 co 
28. Upper Lias Clay. I, ee 0 oe 
; Total 178 
S. oleraceus 
178 
