 | 1812 - 1020 pages
...fifty or eighty pounds •weight of cascalhao. The water being then let in upon it, the cascalhao is spread abroad and continually raked up to the head...operation is performed for the space of a quarter of an hour j the water then begins to run clearer, having washed the earthy particles away, the gravel-like... | |
 | Anonymous - 1812 - 512 pages
...about fifty or eighty pounds weight of cascalhaa. The water being then let upon it, the cascallmo is spread abroad and continually raked up to the head of the trough so us to be kept in constant motion. This operation is performed for the space of a quarter of an hour;... | |
 | 1813 - 706 pages
...head of the trough, fo as to be kept in conitant motion. This operation is performed for the fpace of a quarter of an hour; the water then begins to run clearer, having wafhed the earthy particles away, the- gravel-like matter is raked up to the end of the trough ; after... | |
 | 1813 - 702 pages
...head of the trough, fo as to be kept in confiant motion. This operation is performed for the fpace of a quarter of an hour; the water then begins to run clearer, having wafned the earthy particles away, the gravel-like matter is raked np to the end of the trough ; after... | |
 | Edward T W. Polehampton - 1815 - 546 pages
...abroad and continually raked up to the head of (lie trough, so as to be kept in constant motion. Tnis operation is performed for the space of a quarter of an hour; the water then begins to run clent'Ci ; Having washed the earthy particl s away, the gravel-like thatter is Kk ••>! up to the... | |
 | William Bingley - 1820 - 368 pages
...fifty to eighty pounds weight of cascalhao. The water being then let in, the cascalhao is spread about and continually raked up to the head of the trough,...in constant motion. This operation is performed for about a quarter of an hour : the water then begins to run clearer, in consequence of the earthy particles... | |
 | Edmund Burke - 1821 - 976 pages
...about fifty or eighty pounds weight of cascalhao. The water being then let in upon it, the cascalhao is spread abroad and continually raked up to the head...washed the earthy particles away, the gravel-like mutter is raked up to the end of the trough ; after the current flows away quite clear, the largest... | |
 | Sir Richard Phillips - 1821 - 788 pages
...eighty pounds weight of the earth. The water being then allowed to pass in by degrees, the earth is spread abroad, and continually raked up to the head...as to be kept in constant motion. This operation is continued for a quarter of au hour, when the water begins to run clearer ; [1, the eariliy par d away,... | |
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The water being then let in upon it, the cascalhao in spread abroad and continually raked up to the head of the trough, so as to be kept in constant motion. This operation is performed for the space of a quarter of an hour ; the water then begins to run... 
