The Universal Preceptor: Being a General Grammar of Arts, Sciences, and Useful Knowledge ...A. Phelps, 1826 - 312 страница |
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Страница 7
... fire . 12. The art of swimming , depends , first , on keep- ing the arms and hands under the water ; on protrud- ing only the face and a part of the head out of the water ; and then using such action , as will direct the body in any ...
... fire . 12. The art of swimming , depends , first , on keep- ing the arms and hands under the water ; on protrud- ing only the face and a part of the head out of the water ; and then using such action , as will direct the body in any ...
Страница 8
... fire ; but this was an art not known to all barbarous people . The inhabitants of the Ladrones considered fire as an invisible monster , when the Spaniards first introduced it among them . 16. The Persians , and other eastern nations ...
... fire ; but this was an art not known to all barbarous people . The inhabitants of the Ladrones considered fire as an invisible monster , when the Spaniards first introduced it among them . 16. The Persians , and other eastern nations ...
Страница 19
... fire for a considerable time , they also im- bibe oxygen from the atmosphere ; and turn into sub- stances called oxides : the process is called oxidation . 79. If 10 lbs . of lead be melted and heated in this manner , it will be ...
... fire for a considerable time , they also im- bibe oxygen from the atmosphere ; and turn into sub- stances called oxides : the process is called oxidation . 79. If 10 lbs . of lead be melted and heated in this manner , it will be ...
Страница 20
... fires . 83. Gold is 19 times heavier than water ; and the most valuable of all the metals . It is so malleable , that an ounce of it will gild a silver wire 13,000 miles in length and it may be beaten into leaves ; 300,000 of which ...
... fires . 83. Gold is 19 times heavier than water ; and the most valuable of all the metals . It is so malleable , that an ounce of it will gild a silver wire 13,000 miles in length and it may be beaten into leaves ; 300,000 of which ...
Страница 21
... fire with flint . Obs .-- The loadstone , which possesses the singular and un- accountable property of always pointing to the north , is an ore of iron . Red and yellow ochres are impure oxides of iron : general- ly where redness is ...
... fire with flint . Obs .-- The loadstone , which possesses the singular and un- accountable property of always pointing to the north , is an ore of iron . Red and yellow ochres are impure oxides of iron : general- ly where redness is ...
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