348 
Mr. Sharpe continues that “it can now with confidence be 
asserted that these works (the line of stakes) extended for about 
two miles along the course of the river . . . . the passage of 
the ford being about the centre. The number of vertical stakes 
used in a single line crossing the stream diagonally at either end 
and stiffened with two other lines below ‘Old England’ would, 
when driven in 6 feet apart, have amounted to between two and 
three thousand . . . .” There is also good evidence “ that 
stakes were driven into the foreshore as well as the main channel - 
this accords with Caesar’s description, when he says that the bank 
was also defended ” :— 
“B.C. Jury 54. Caxzsar’s Invasion wits 20,000 MrEn, 
“ Caesar being aware of their plans, led his army to the Thames 
to the kingdom of Cassivellaunus. The river was passable on 
foot only at one place and that with difficulty. . ae 
“The bank also was defended with sharpened stakes fixed out- 
wards, and similar stakes were placed under water and concealed by 
the river.” 
Mr. Sharpe’s paper is illustrated by an old plan of the district 
around the Thames Ford B.C., a view of the river bank at “Old 
ngland,” a photograph of one of the stakes, a plan of the position 
of the stakes in the river at the upper end of the line of fortifica- 
tions guarding the ford, and some other maps relating to the history 
of this ancient ford, 
J. M. H. 
re 
Heritiera utilis—Herbarium specimens of a sterculiaceous tree 
ring the native name “ N yankom ” were received in April, 1908, 
from Mr. H. N, Thompson, who had collected them in the Gold 
taneously with publication, a further Specimen, bearing female 
owers, was received from Mr, Thompson, and examination of this 
showed that “Nyankom ” belonged to the genus Heritiera. It 
u 
by its maple-like fruits. 2. Papii; B 
ee 1 + apie, Beddome, and H. acuminata, 
Wall, also have winged fruits, but the wing is of a different shape. 
T. A. 
v ° 
Peet pretest enmeshed 
‘i coamat Goan ne for September.— A phelandra tetragona, Nees, a 
or man can species, has been in cultivation at Kew 
1798 ra ean : As Justicia cristata it was figured by Jacquin in 
7 * specimen grown in the Hortus Schoenbrunnensis, and 
