Sanitation of the Isthmus of Panama During the Constructive Period
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Pockets and irregularities in banks of streams and vegetation In the i!?atcr are most favorable breeding places. The banks are kept free from pockets and well above the high water so as to be free from vegetation.
One method adopted to some extent was the burning of grass on the edges of the stream, but as this vsas neither premanent nor satisfactory, it was only used where there was no other alternative.
The banks are trimmed and lined with stone where ever neceeastry; the pockets filled or cu...t away, and the courses of the streams straightened. Algae growth can be destroyed with a solution of copper sulphate or larvacide .which will be described later) or be raked out onto the high ground and burned.
Introduction of Fish.
The introduction of fish into the streams and reservoirs from which water supplies are derived has met with much success on the Canai Zone. A variety of fish known as "Millions", a very small top minnow of the species Gerardinus occuring only in waters surrounding the Island of Earbadoes off the north coast 22.
What to read after Sanitation of the Isthmus of Panama During the Constructive Period?
You can find similar books in the "Read Also" column, or choose other free books by Smith, S. M to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Pockets and irregularities in banks of streams and vegetation In the i!?atcr are most favorable breeding places. The banks are kept free from pockets and well above the high water so as to be free from vegetation.
One method adopted to some extent was the burning of grass on the edges of the stream, but as this vsas neither premanent nor satisfactory, it was only used where there was no other alternative.
The banks are trimmed and lined with stone where ever neceeastry; the pockets filled or cu...t away, and the courses of the streams straightened. Algae growth can be destroyed with a solution of copper sulphate or larvacide .which will be described later) or be raked out onto the high ground and burned.
Introduction of Fish.
The introduction of fish into the streams and reservoirs from which water supplies are derived has met with much success on the Canai Zone. A variety of fish known as "Millions", a very small top minnow of the species Gerardinus occuring only in waters surrounding the Island of Earbadoes off the north coast 22.
What to read after Sanitation of the Isthmus of Panama During the Constructive Period?
You can find similar books in the "Read Also" column, or choose other free books by Smith, S. M to read onlineMoreLess
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