The Naturalist in Nicaragua: A Narrative of a Residence at the Gold Mines of Chontales; Journeys in the Savannahs and Forests; with Observations on Animals and Plants in Reference to the Theory of Evolution of Living Forms |
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Page 85
Configuration of the ground at Santo Domingo - Excavation of valleys - Geology
of the district - - Decomposition of the rocks - Gold - mining - Auriferous quartz
veins — Mode of occurrence of the goldLodes richer next the surface than at
lower ...
Configuration of the ground at Santo Domingo - Excavation of valleys - Geology
of the district - - Decomposition of the rocks - Gold - mining - Auriferous quartz
veins — Mode of occurrence of the goldLodes richer next the surface than at
lower ...
Page 86
The quartz veins now form the crests of many of the ranges , but are everywhere
cut through by the lateral valleys . The beds of doleryte lie at low angles , through
which the quartz veins cut Ch . VI . ] QUARTZ LODES . nearly vertically 86 [ Ch ...
The quartz veins now form the crests of many of the ranges , but are everywhere
cut through by the lateral valleys . The beds of doleryte lie at low angles , through
which the quartz veins cut Ch . VI . ] QUARTZ LODES . nearly vertically 86 [ Ch ...
Page 87
They are what are called fissure - veins , owing their origin to cracks or fractures
in the rocks that have been filled up with mineral substances through chemical ,
thermal , aqueous , or plutonic agencies . In depth , the bottom of fissure - veins ...
They are what are called fissure - veins , owing their origin to cracks or fractures
in the rocks that have been filled up with mineral substances through chemical ,
thermal , aqueous , or plutonic agencies . In depth , the bottom of fissure - veins ...
Page 90
This accumulation of loose gold near the surface of auriferous veins , set at liberty
from its matrix by the decomposition of the ore , and concentrated by degradation
, is probably the reason of the great richness of many of what are called the ...
This accumulation of loose gold near the surface of auriferous veins , set at liberty
from its matrix by the decomposition of the ore , and concentrated by degradation
, is probably the reason of the great richness of many of what are called the ...
Page 91
I at one time , after having studied the auriferous quartz veins of Australia ,
advocated this theory , which was first insisted upon by Sir R . I . Murchison , but
further experience in North Wales , Nova Scotia , Brazil , and Central America ,
has led ...
I at one time , after having studied the auriferous quartz veins of Australia ,
advocated this theory , which was first insisted upon by Sir R . I . Murchison , but
further experience in North Wales , Nova Scotia , Brazil , and Central America ,
has led ...
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America amongst ancient animals ants appear attacks beetles believe birds body branches brought called carried cattle Central America clear close colour common continued covered crossed dark excepting feet flowers followed forest four fruit glacial grass green ground growing head hills hundred Indians inhabitants insects islands lake land latter leaves less live lodes look maize miles mines mountain mules natives natural nearly nest never Nicaragua night North numerous origin passed period plains plantains plants probably protection quartz range reached resemblance river road rocks running Santo Domingo savannahs season seen side sometimes soon species stones surface taken tion told town travelling trees tropical turned valley variety veins wasps whilst whole young
Bibliographic information
| Title | The Naturalist in Nicaragua: A Narrative of a Residence at the Gold Mines of Chontales; Journeys in the Savannahs and Forests; with Observations on Animals and Plants in Reference to the Theory of Evolution of Living Forms |
| Author | Thomas Belt |
| Edition | 2 |
| Publisher | E. Bumpus, 1888 |
| Original from | Harvard University |
| Digitized | 26 nov. 2008 |
| Length | 403 pages |
| Export Citation | BiBTeX EndNote RefMan |