The Universal Preceptor: Being a General Grammar of Arts, Sciences, and Useful Knowledge ...A. Phelps, 1826 - 312 страница |
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Страница 16
... pounds weight ; and , consequently afford one hundred and twenty pounds of potatoes , per day , the 16 AGRICULTURE .
... pounds weight ; and , consequently afford one hundred and twenty pounds of potatoes , per day , the 16 AGRICULTURE .
Страница 17
... pounds of animal food ) , would produce 4,000 pounds weight of grain ; or afford ten pounds of wheat , per day , leaving suffi- cient for seed . Peas and beans yield in the same proportion , tur- nips and carrots are as productive as ...
... pounds of animal food ) , would produce 4,000 pounds weight of grain ; or afford ten pounds of wheat , per day , leaving suffi- cient for seed . Peas and beans yield in the same proportion , tur- nips and carrots are as productive as ...
Страница 19
... . of lead be melted and heated in this manner , it will be converted into an oxide called red lead ; and the red lead so produced , will be found to weigh 11 lbs . the additional pound arising from the METALLURGY . 19.
... . of lead be melted and heated in this manner , it will be converted into an oxide called red lead ; and the red lead so produced , will be found to weigh 11 lbs . the additional pound arising from the METALLURGY . 19.
Страница 20
Sir Richard Phillips. weigh 11 lbs . the additional pound arising from the imbibed oxygen . 80. Oxides may be converted into metals again , by depriving them of their oxygen . In the example of red lead , if it be burnt again with ...
Sir Richard Phillips. weigh 11 lbs . the additional pound arising from the imbibed oxygen . 80. Oxides may be converted into metals again , by depriving them of their oxygen . In the example of red lead , if it be burnt again with ...
Страница 32
... pounds weight ; or 144 mill- ions of pounds at 1s . per pound , value £ 7,400,000 . These manufactured , produce 20 millions of pounds sterling ; leav- ing a profit of upwards of twelve millions per annum , manufacturers . to the 125 ...
... pounds weight ; or 144 mill- ions of pounds at 1s . per pound , value £ 7,400,000 . These manufactured , produce 20 millions of pounds sterling ; leav- ing a profit of upwards of twelve millions per annum , manufacturers . to the 125 ...
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