Agricola, Georgius
,
De re metallica
,
1912/1950
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Figures
Thumbnails
Page concordance
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
631 - 660
661 - 679
>
Scan
Original
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
631 - 660
661 - 679
>
page
|<
<
of 679
>
>|
<
archimedes
>
<
text
>
<
body
>
<
chap
>
<
p
type
="
caption
">
<
s
>
<
pb
pagenum
="
275
"/>
to the ore which has been roasted, while it is still hot, in order to make
<
lb
/>
it softer and more easily broken; for after fire has dried up the moisture
<
lb
/>
in the ore, it breaks up more easily while it is still hot, of which fact burnt
<
lb
/>
limestone affords the best example.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>By digging out the earth they make the areas much larger, and square;
<
lb
/>
walls should be built along the sides and back to hold the heat of the
<
lb
/>
fire more effectively, and the front should be left open. </
s
>
<
s
>In these compart
<
lb
/>
ments tin ore is roasted in the following manner. </
s
>
<
s
>First of all wood about
<
lb
/>
twelve feet long should be laid in the area in four layers, alternately straight
<
lb
/>
and transverse. </
s
>
<
s
>Then the larger pieces of ore should be laid upon them, and
<
lb
/>
on these again the smaller ones, which should also be placed around the sides;
<
lb
/>
the fine sand of the same ore should also be spread over the pile and pounded
<
lb
/>
with shovels, to prevent the pile from falling before it has been roasted; the
<
lb
/>
wood should then be fired.</
s
>
</
p
>
<
figure
number
="
148
"/>
<
p
type
="
caption
">
<
s
>A—LIGHTED PYRE. B—PYRE WHICH IS BEING CONSTRUCTED. C—ORE. D—WOOD.
<
lb
/>
E—PILE OF THE SAME WOOD.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>Lead ore, if roasting is necessary, should be piled in an area just like the
<
lb
/>
last, but sloping, and the wood should be placed over it. </
s
>
<
s
>A tree trunk should
<
lb
/>
be laid right across the front of the ore to prevent it from falling out. </
s
>
<
s
>The
<
lb
/>
ore, being roasted in this way, becomes partly melted and resembles slag. </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>