senior member of the Peruvian
Hydrographical Commission, navigation is clear and unobstructed for
any steamer that can ascend the Pachitea; that is, for any steamer not
drawing more than nine feet of water. Beyond this island the
navigation of the river becomes much more difficult, though not
altogether impracticable. The River Trinidad, so named on account of
its having been discovered on Trinity Sunday, empties itself into the
Pichis ten miles above Rochelle Isla; it is a fine, large river,
flowing from the eastward, with deep water and a current of 3 miles
per hour at its mouth.

TEMPESTAD PLAYA.

Latitude, 10 deg. 5' 6" south; longitude, 74 deg. 55' 45" west of
Greenwich; magnetic variation, 7 deg. 46' east; distance from the
Atlantic, 3123 miles. Tempestad Playa received its name in consequence
of a violent tempest which was there encountered by the namers.

MOUTH OF THE HERRERAYACU RIVER.

Latitude, 10 deg. 20' 3" south; longitude, 74 deg. 54' west of
Greenwich; magnetic variation, 7 deg. 59' 26" east; distance from the
Atlantic, 3156 miles.

The Herrerayacu river was named after the major who commanded the
escort of soldiers accompanying the Hydrographical Commission; it has
a current of 3-1/2 miles per hour, and is navigable for canoes a
distance of four or five miles, up to Terminacion Playa in latitude 10
deg. 22' 33" south; longitude, 74 deg. 54' west of Greenwich. Mountain
ranges are plainly in sight from Terminacion Playa, which is 3160
miles distant from the Atlantic.

PUERTO TUCKER.

Latitude, 10 deg. 22' 55" south; longitude, 74 deg. 49' west of
Greenwich; magnetic variation, 9 deg. 7' 30" east; elevation above
sea-level, 700 feet; distance from the Atlantic, 3167 miles; current,
3-1/2 miles per hour.

Puerto Tucker was named after the President of the Hydrographical
Commission. It is at the head of canoe navigation, not far from the
source, of the Pichis river; from it a range of lofty mountains,
distant some twenty or thirty miles, bears from S. to S.W. This range
must be the eastern Cordillera of Peru.

LIST OF DISTANCES ON THE PICHIS RIVER.

Miles.
Mouth of the Pichis to the Atlantic ocean 3082
Mouth of the Pichis to Rochelle Isla 18
Rochelle Isla to mouth of Trinidad river 10
Mouth of Trinidad river to Tempestad Playa 13
Tempestad Playa to mouth of the Her