Notes . 
1 7i 
Ilex Aquifolium . Owing to the small quantity of NaCl present in the leaf-ash 
this plant is not so suitable for experimentation ; the variations are, however, 
recorded in analyses XI, XII, and XIII. When the leaf-ash was obtained from 
a plant growing six miles from the sea it contained 0*02 per cent. NaCl. The ash 
was procured from other plants growing one mile from the sea, in one case (XII) 
slightly sheltered from the sea winds, in the other (XIII) exposed. The ash of the 
former contained 0-05 per cent. NaCl and of the latter 0-07 per cent. NaCl. 
These facts are evidence in support of the view that it is from the sodium 
chloride in the atmosphere that the leaves of such plants receive their supply 
of sodium chloride. 
TABLE. 
Plant. 
Distance 
from the 
sea. 
Aspect. 
% of NaCl 
Soil. 
in dry wt. 
Leaf. 
1. Ulmus campestris 
6 miles 
Land sloping towards the sea 
0-01 
o*37 
II. „ 
1 mile 
Slightly sheltered from the sea 
O-O.I 
0-71 
HI. „ 
440 yds. 
Sheltered from the sea 
0-03 
0.50 
IV. „ 
2 miles 
Much exposed 
— 
1*02 
V. „ 
400 yds. 
Exposed 
— 
i*74 
VI. Acer Pseudo-platan 11 s 
6 miles 
Land sloping towards the sea 
O-OI 
0.32 
vn. „ 
1 mile 
Slightly sheltered 
0.03 
o-43 
VIII. „ 
440 yds. 
Sheltered from the sea 
°.°3 
o -37 
IX. „ 
400 yds. 
Slightly sheltered 
— 
°-57 
X. „ . „ 
400 yds. 
Exposed 
o«66 
XI. Ilex Aquifolium 
1 mile 
Slightly sheltered 
— 
0.05 
XII. „ 
1 mile 
Exposed 
— 
0’07 
XIII. „ 
6 miles 
Land sloping towards the sea 
— 
0.02 
Literature. 
1. Czapek: Biochemie der Pflanzen, vol. ii, 1905, p. 810. 
2. Kerner von Marilaun, A. (’87-91) : The Natural History of Plants. Engl. Ed. 
3. Warming, E. (’09): Oecology of Plants. Engl. Ed. 
4. Lesage, P. : Le Chlorure de sodium dans les plantes. Comptes rendus, tome cxiv, p. 143. 
5. Lewis, F. J. : On Induced Variations in the Osmotic Pressure and Sodium Chloride Content of the 
Leaves of Non-halophytes. New Phytologist, vol. xi, p. 256. 
6. Ackroyd, W. : On the Circulation of Salt and its Bearing on Chemico-geological Problems, 
more particularly that of the Geological Age of the Earth. Chem. News, vol. Ixxxiii, 
1901, p. 265. 
7. — : On the Circulation of Salt and its Bearing on Chemico-geological Problems. 
Chem. News, vol. lxxxiv, 1901, p. 56. 
L. MARGARET BLACKLEDGE. 
Hartley Botanical Laboratories, 
University of Liverpool. 
November , 1912. 
