capital.

The position which General Butler had chosen between the two rivers, the
James and Appomattox, was one of great natural strength, one where a
large area of ground might be thoroughly inclosed by means of a single
intrenched line, and that a very short one in comparison with the extent
of territory which it thoroughly protected. His right was protected by
the James River, his left by the Appomattox, and his rear by their
junction--the two streams uniting near by. The bends of the two streams
shortened the line that had been chosen for intrenchments, while it
increased the area which the line inclosed.

Previous to ordering any troops from Butler I sent my chief engineer,
General Barnard, from the Army of the Potomac to that of the James to
inspect Butler's position and ascertain whether I could again safely
make an order for General Butler's movement in co-operation with mine,
now that I was getting so near Richmond; or, if I could not, whether his
position was strong enough to justify me in withdrawing some of his
troops and having them brought round by water to White House to join me
and reinforce the Army of the Potomac. General Barnard reported the
position very strong for defensive purposes, and that I could do the
latter with great security; but that General Butler could not move from
where he was, in co-operation, to produce any effect. He said that the
general occupied a place between the James and Appomattox rivers which
was of great strength, and where with an inferior force he could hold it
for an indefinite length of time against a superior; but that he could
do nothing offensively. I then asked him why Butler could not move out
from his lines and push across the Richmond and Petersburg Railroad to
the rear and on the south side of Richmond. He replied that it was
impracticable, because the enemy had substantially the same line across
the neck of land that General Butler had. He then took out his pencil
and drew a sketch of the locality, remarking that the position was like
a bottle and that Butler's line of intrenchments across the neck
represented the cork; that the enemy had built an equally strong line
immediately in front of him across the neck; and it was therefore as if
Butler was in a bottle. He was perfectly safe against an attack; but,
as Barnard expressed it, the enemy had corked the bottle and with a
small force could hold the cork in its place. This struck me as being
very expr