bas 144
Pebas to Iquitos 117
Iquitos to Tamshiyacu 20
Tamshiyacu to mouth of the Ucayali river 43
Mouth of the Ucayali river to Nauta 6
Nauta to San Regis 50
San Regis to Santa Cruz de Parinari 28
Santa Cruz de Parinari to Parinari 20
Parinari to Vaca Marina 41
Vaca Marina to Elvira 18
Elvira to San Pedro 41
San Pedro to Fontevera 15
Fontevera to mouth of the Huallaga river 22
Mouth of the Huallaga river to Cedro Isla 15
Cedro Isla to mouth of the Pastaza river 69
Mouth of the Pastaza river to Barranca 31
Barranca to Mouth of the Potro river 19
Mouth of the Potro river to mouth of the Morona river 12
Mouth of the Morona river to Limon 12
Limon to Punta Achual 24
Punta Achual to Borja 48
From the Atlantic to Borja, the head of navigation,
2660 miles.
Borja to Lake Laracocha 500
Source of the Amazon.
Length of the Amazon river from its source to its
mouth, 3160 miles.

HUALLAGA RIVER.

The Huallaga has its source in Lake Chiquicoba, flows by the important
central city of Huanaco, and thence in a direction nearly north, for
450 miles, until its confluence with the Amazon. The mouth of the
Huallaga is 2430 miles distant from the Atlantic, and its current is
about 3 miles per hour. Eighteen feet of water can usually be carried
up to Yurimaguas, and steamers ascend 40 miles higher to a place
called Rumicallarina; above Rumicallarina the river is navigable for a
great distance by canoes. About 8 miles below Yurimaguas the river is
divided by an island, on each side of which there are sand-bars that
steamers drawing more than 11 feet of water are sometimes unable to
pass during the months of June, July and August.

LAGUNA.

Distance from the Atlantic, 2447 miles; current, 3 miles per hour.

SANTA LUCIA.

Distance from the Atlantic, 2473 miles; current, 3 miles per hour.

SANTA MARIA.

Distance