Chapter XXIII: Costa Rica

Gerard at Punta de Arenas, in the Pacific, in 1822--Nicolas
Castro worked a gold mine, 1821--Alverado's ore-grinding machine,
1822--Climate of Costa Rica--Mines in the Cordillera--Canal
from the river Machuca to Quebrada-honda--Castro's mine--Padre
Arias, or the Priest's mine--Trevithick and Gerard's proposal
for iron railroads, &c., for the mines of Costa Rica, 1827--New
line of road from San Juan, on the Atlantic, to the Costa Rica
mines--Serapique River navigable--Trevithick's diary--A mule track
easily constructed--Comparative distance to the mines from the
head of the Serapique on the Atlantic, and Punta de Arenas on the
Pacific--Trevithick nearly drowned in the Serapique--Nearly starved
before reaching San Juan--Performs a surgical operation--Designed
the locomotive between breakfast and dinner--Robert Stephenson and
Trevithick at Carthagena--Nearly drowned in the Magdalena--Saved by Mr.
Bruce Napier Hall--Trevithick nursed Robert Stephenson Page 260-275

CHAPTER XXIV.

RETURN TO ENGLAND.

Bodmin School, 1827--Cube root--Trevithick's reception--Saving in
Cornish mines--Model gun--Gerard's return, 1827--His meeting Robert
Stephenson--His remarks on Costa Rica--Montelegre's search for a better
line of road--Mr. M. Williams's proposal--Change of Ministry, and the
gun-carriage--Model of iron packet-ship and engine--Robert Stephenson's
remarks on mining--Trevithick's rejection of purchase-money
Page 276-283

CHAPTER XXV.

GUN-CARRIAGE--IRON SHIPS--HYDRAULIC CRANE--ICE MAKING--DRAINAGE
OF HOLLAND--CHAIN-PUMP--OPEN-TOP CYLINDER--HAYLE HARBOUR--PATENT
RIGHTS--PETITION TO PARLIAMENT.

Trevithick's description of gun-carriage and iron ship--Select
committee--Glasgow iron-ship builders--Trevithick's comparison of
gunpowder and steam--Cranes worked by air or water--Artificial
cold--Liberality--Holland--Drainage--Dredging--Zuyder
Zee--Hydraulic crane--Dutch pumping engine--Chain-pump--Haarlem
Lake--Rhine--Windmills--Hayle Harbour--Disputed pole-engine
patent right--Petition to Parliament, 1828--Marine boilers--Steam
pressure--Engine duty--Lords of the Treasury refuse the
petition--Davies Gilbert's views--Marine compound engine of 1871
Page 284-314