Agricola, Georgius
,
De re metallica
,
1912/1950
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Figures
Thumbnails
List of thumbnails
<
1 - 10
11 - 20
21 - 30
31 - 40
41 - 50
51 - 60
61 - 70
71 - 80
81 - 90
91 - 100
101 - 110
111 - 120
121 - 130
131 - 140
141 - 150
151 - 160
161 - 170
171 - 180
181 - 190
191 - 200
201 - 210
211 - 220
221 - 230
231 - 240
241 - 250
251 - 260
261 - 270
271 - 280
281 - 290
291 - 300
301 - 310
311 - 320
321 - 330
331 - 340
341 - 350
351 - 360
361 - 370
371 - 380
381 - 390
391 - 400
401 - 410
411 - 420
421 - 430
431 - 440
441 - 450
451 - 460
461 - 470
471 - 480
481 - 490
491 - 500
501 - 510
511 - 520
521 - 530
531 - 540
541 - 550
551 - 560
561 - 570
571 - 580
581 - 590
591 - 600
601 - 610
611 - 620
621 - 630
631 - 640
641 - 650
651 - 660
661 - 670
671 - 679
>
141
142
143
144
145
146
147
148
149
150
<
1 - 10
11 - 20
21 - 30
31 - 40
41 - 50
51 - 60
61 - 70
71 - 80
81 - 90
91 - 100
101 - 110
111 - 120
121 - 130
131 - 140
141 - 150
151 - 160
161 - 170
171 - 180
181 - 190
191 - 200
201 - 210
211 - 220
221 - 230
231 - 240
241 - 250
251 - 260
261 - 270
271 - 280
281 - 290
291 - 300
301 - 310
311 - 320
321 - 330
331 - 340
341 - 350
351 - 360
361 - 370
371 - 380
381 - 390
391 - 400
401 - 410
411 - 420
421 - 430
431 - 440
441 - 450
451 - 460
461 - 470
471 - 480
481 - 490
491 - 500
501 - 510
511 - 520
521 - 530
531 - 540
541 - 550
551 - 560
561 - 570
571 - 580
581 - 590
591 - 600
601 - 610
611 - 620
621 - 630
631 - 640
641 - 650
651 - 660
661 - 670
671 - 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
>