Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould, Kendall, and Lincoln, 1850 |
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Pagina 44
... gold medal of the American Institute last year . It is of the simplest construction , and while it does not inter- fere with the use of the compass as now practised , it merely gives an addition by which the deflections of the needle ...
... gold medal of the American Institute last year . It is of the simplest construction , and while it does not inter- fere with the use of the compass as now practised , it merely gives an addition by which the deflections of the needle ...
Pagina 75
... gold - fish in a crystal jar . This instrument is not only used by the fishermen , but is also found aboard the navy and coasting vessels of Norway . When their anchors get into foul ground , or their cables warped on a road- stead ...
... gold - fish in a crystal jar . This instrument is not only used by the fishermen , but is also found aboard the navy and coasting vessels of Norway . When their anchors get into foul ground , or their cables warped on a road- stead ...
Pagina 91
... this means , and it is necessary to apply the process only to those parts which require renewal , a silversmith's forge being used as the furnace . BRITISH GOLD . UNDER this title we are not about MECHANICS AND USEFUL ARTS . 91.
... this means , and it is necessary to apply the process only to those parts which require renewal , a silversmith's forge being used as the furnace . BRITISH GOLD . UNDER this title we are not about MECHANICS AND USEFUL ARTS . 91.
Pagina 92
... gold of different degrees of color and purity , takes a high degree of polish , and cleans easily when tarnished . We have in- spected some small articles , pencil - cases , & c . , manufactured from this alloy , and it would indeed be ...
... gold of different degrees of color and purity , takes a high degree of polish , and cleans easily when tarnished . We have in- spected some small articles , pencil - cases , & c . , manufactured from this alloy , and it would indeed be ...
Pagina 93
... GOLD PENS . A RECENT examination of some gold pens in the laboratory of the Lawrence Scientific School , Cambridge , showed that they were com- posed of galvanized iron , coated with an extremely thin plating of gold . The pen was ...
... GOLD PENS . A RECENT examination of some gold pens in the laboratory of the Lawrence Scientific School , Cambridge , showed that they were com- posed of galvanized iron , coated with an extremely thin plating of gold . The pen was ...
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