±´¿Çµç×ÓÊé > Ó¢ÎÄÔ­Öøµç×ÓÊé > scientific secrets >

µÚ10ÕÂ

scientific secrets-µÚ10ÕÂ

С˵£º scientific secrets ×ÖÊý£º ÿҳ4000×Ö

°´¼üÅÌÉÏ·½Ïò¼ü ¡û »ò ¡ú ¿É¿ìËÙÉÏÏ·­Ò³£¬°´¼üÅÌÉ쵀 Enter ¼ü¿É»Øµ½±¾ÊéĿ¼ҳ£¬°´¼üÅÌÉÏ·½Ïò¼ü ¡ü ¿É»Øµ½±¾Ò³¶¥²¿£¡
¡ª¡ª¡ª¡ªÎ´ÔĶÁÍꣿ¼ÓÈëÊéÇ©ÒѱãÏ´μÌÐøÔĶÁ£¡



In¡¡a¡¡pint¡¡of¡¡spirits¡¡of¡¡wine¡¡dissolve¡¡2¡¡oz¡£¡¡of¡¡seed¡¡lac£»¡¡and¡¡2¡¡oz¡£¡¡of¡¡
resin¡£¡¡The¡¡principal¡¡use¡¡of¡¡this¡¡polish¡¡is¡¡for¡¡the¡¡carved¡¡parts¡¡of¡¡cabinet¡¡
work£»¡¡such¡¡as¡¡standards£»¡¡pillars£»¡¡claws£»¡¡&c¡£¡¡It¡¡should¡¡be¡¡laid¡¡on¡¡warm£»¡¡
and¡¡it¡¡will¡¡be¡¡still¡¡better£»¡¡but¡¡all¡¡moisture¡¡and¡¡dampness¡¡should¡¡be¡¡
carefully¡¡avoided¡£









¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡132¡£¡¡FRENCH¡¡POLISH
Take¡¡1¡¡oz¡£¡¡of¡¡shellac£»¡¡1/4¡¡oz¡£¡¡of¡¡gum¡­arabic£»¡¡and¡¡1/4¡¡oz¡£¡¡of¡¡gum¡¡copal£»¡¡
bruise¡¡them¡¡well£»¡¡and¡¡sift¡¡them¡¡through¡¡a¡¡piece¡¡of¡¡muslin£»¡¡then¡¡put¡¡them¡¡
along¡¡with¡¡a¡¡pint¡¡of¡¡spirits¡¡of¡¡win¡¡into¡¡a¡¡closely¡¡corked¡¡vessel£»¡¡place¡¡it¡¡
in¡¡a¡¡very¡¡warm¡¡situation£»¡¡and¡¡shake¡¡it¡¡frequently¡¡every¡¡day¡¡till¡¡the¡¡gums¡¡
are¡¡dissolved£»¡¡then¡¡strain¡¡through¡¡a¡¡piece¡¡of¡¡muslin£»¡¡and¡¡keep¡¡it¡¡corked¡¡
for¡¡use¡£

133¡£¡¡WATER¡­PROOF¡¡POLISH
Put¡¡2¡¡ozs¡£¡¡of¡¡gum¡¡benjamin£»¡¡1/4¡¡oz¡£¡¡of¡¡gum¡¡sandrac£»¡¡and¡¡1/4¡¡oz¡£¡¡of¡¡gum¡¡
anima£»¡¡into¡¡a¡¡pint¡¡of¡¡spirits¡¡of¡¡wine£»¡¡in¡¡a¡¡closely¡¡stopped¡¡bottle£»¡¡place¡¡
the¡¡bottle¡¡either¡¡in¡¡a¡¡sand¡¡bath£»¡¡or¡¡in¡¡hot¡¡water£»¡¡till¡¡the¡¡gums¡¡are¡¡
dissolved£»¡¡then¡¡strain¡¡off¡¡the¡¡mixture£»¡¡shake¡¡it¡¡up¡¡with¡¡a¡¡1/4¡¡of¡¡a¡¡gill¡¡
of¡¡the¡¡best¡¡clear¡¡poppy¡¡oil£»¡¡and¡¡put¡¡by¡¡for¡¡use¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡134¡¡FINISHING¡¡POLISH
Put¡¡2¡¡drachms¡¡of¡¡shellac£»¡¡and¡¡2¡¡drachms¡¡of¡¡gum¡¡benjamin£»¡¡into¡¡1/2¡¡pint¡¡of¡¡
the¡¡very¡¡best¡¡rectified¡¡spirits¡¡of¡¡wine£»¡¡in¡¡a¡¡bottle¡¡closely¡¡corked£»¡¡keep¡¡
the¡¡bottle¡¡in¡¡a¡¡warm¡¡place£»¡¡and¡¡shake¡¡it¡¡frequently¡¡till¡¡the¡¡gums¡¡are¡¡
dissolved£»¡¡when¡¡cold¡¡shake¡¡up¡¡with¡¡it¡¡2¡¡teaspoonsful¡¡of¡¡the¡¡best¡¡clear¡¡
poppy¡¡oil£»¡¡and¡¡it¡¡will¡¡be¡¡fit¡¡for¡¡use¡£¡¡This¡¡polish¡¡may¡¡be¡¡applied¡¡with¡¡
great¡¡advantage¡¡after¡¡any¡¡of¡¡those¡¡mentioned¡¡in¡¡the¡¡foregoing¡¡receipts¡¡
have¡¡been¡¡used¡£¡¡It¡¡removes¡¡the¡¡defects¡¡existing¡¡in¡¡them£»¡¡increasing¡¡their¡¡
lustre¡¡and¡¡durability£»¡¡and¡¡gives¡¡the¡¡surface¡¡a¡¡most¡¡brilliant¡¡appearance¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡135¡£¡¡COMPOSITION¡¡USED¡¡IN¡¡WELDING¡¡CAST¡¡STEEL
Take¡¡of¡¡borax£»¡¡10¡¡parts£»¡¡sal¡­ammoniac£»¡¡1¡¡part£»¡¡grind¡¡or¡¡pound¡¡them¡¡roughly¡¡
together£»¡¡then¡¡fuse¡¡them¡¡in¡¡a¡¡metal¡¡pot¡¡over¡¡a¡¡close¡¡fire£»¡¡taking¡¡care¡¡to¡¡
continue¡¡the¡¡heat¡¡until¡¡all¡¡spume¡¡has¡¡disappeared¡¡from¡¡the¡¡surface£»¡¡when¡¡
the¡¡liquid¡¡appears¡¡clear£»¡¡the¡¡composition¡¡is¡¡ready¡¡to¡¡be¡¡poured¡¡out¡¡to¡¡
cool¡¡and¡¡concrete£»¡¡afterward¡¡being¡¡ground¡¡to¡¡a¡¡fine¡¡powder¡£¡¡To¡¡use¡¡this¡¡
composition£»¡¡the¡¡steel¡¡to¡¡be¡¡welded¡¡is¡¡raised¡¡to¡¡a¡¡heat£»¡¡which¡¡may¡¡be¡¡
expressed¡¡by¡¡bright¡¡yellow£»¡¡it¡¡is¡¡then¡¡dipped¡¡among¡¡the¡¡welding¡¡powder£»¡¡
and¡¡again¡¡placed¡¡in¡¡the¡¡fire¡¡until¡¡it¡¡attains¡¡the¡¡same¡¡degree¡¡of¡¡heat¡¡as¡¡
before£»¡¡it¡¡is¡¡then¡¡ready¡¡to¡¡be¡¡placed¡¡under¡¡the¡¡hammer¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡136¡£¡¡COMPOSITION¡¡USED¡¡IN¡¡WELDING¡¡CAST¡¡IRON
Take¡¡good¡¡clear¡¡white¡¡course¡¡sand£»¡¡3¡¡parts£»¡¡refined¡¡solton£»¡¡1¡¡part£»¡¡
fosterine£»¡¡1¡¡part£»¡¡rock¡¡salt¡¡1¡¡part£»¡¡borax£»¡¡1¡¡part£»¡¡mix¡¡all¡¡together¡£¡¡Take¡¡
2¡¡pieces¡¡of¡¡cast¡¡iron£»¡¡heat¡¡them¡¡in¡¡a¡¡moderate¡¡charcoal¡¡fire£»¡¡occasionally¡¡
taking¡¡them¡¡out¡¡while¡¡heating£»¡¡and¡¡dipping¡¡them¡¡into¡¡the¡¡composition£»¡¡
until¡¡they¡¡are¡¡of¡¡a¡¡proper¡¡heat¡¡to¡¡weld£»¡¡then¡¡at¡¡once¡¡lay¡¡them¡¡on¡¡the¡¡
anvil£»¡¡and¡¡gently¡¡hammer¡¡them¡¡together£»¡¡and¡¡if¡¡done¡¡carefully¡¡by¡¡one¡¡who¡¡
understands¡¡welding¡¡iron£»¡¡you¡¡will¡¡have¡¡them¡¡nicely¡¡welded¡¡together¡£¡¡One¡¡
man¡¡prefers¡¡heating¡¡the¡¡metal£»¡¡then¡¡cooling¡¡it¡¡in¡¡the¡¡water¡¡of¡¡common¡¡
beans£»¡¡and¡¡heating¡¡it¡¡again¡¡for¡¡welding¡£






¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡137¡£¡¡CAST¡¡IRON¡¡CEMENT
Take¡¡of¡¡clean¡¡borings¡¡or¡¡turning¡¡of¡¡cast¡¡iron£»¡¡16¡¡parts£»¡¡of¡¡sal¡­ammoniac£»¡¡
2¡¡parts£»¡¡and¡¡flour¡¡of¡¡sulphur£»¡¡1¡¡part£»¡¡mix¡¡them¡¡well¡¡together¡¡on¡¡a¡¡mortar£»¡¡
and¡¡keep¡¡them¡¡dry¡£¡¡When¡¡required¡¡for¡¡use£»¡¡take¡¡1¡¡part¡¡of¡¡the¡¡mixture£»¡¡and¡¡
20¡¡parts¡¡of¡¡clean¡¡borings£»¡¡mix¡¡thoroughly£»¡¡and¡¡add¡¡a¡¡sufficient¡¡quantity¡¡
of¡¡water¡£¡¡Note¡£¡¡¡­¡¡A¡¡little¡¡grindstone¡¡added¡¡improves¡¡the¡¡cement¡£
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡138¡£¡¡CASE¡¡HARDENING
This¡¡is¡¡the¡¡conversion¡¡of¡¡the¡¡surface¡¡of¡¡wrought¡¡iron¡¡into¡¡steel£»¡¡for¡¡the¡¡
purpose¡¡of¡¡adapting¡¡it¡¡to¡¡receive¡¡a¡¡polish£»¡¡or¡¡to¡¡bear¡¡friction£»¡¡&c¡£¡¡The¡¡
best¡¡method¡¡in¡¡the¡¡world¡¡of¡¡effecting¡¡this¡¡is¡¡by¡¡heating¡¡the¡¡iron¡¡to¡¡
cherry¡¡red¡¡in¡¡a¡¡close¡¡vessel£»¡¡in¡¡contact¡¡with¡¡carbonacious¡¡material£»¡¡and¡¡
then¡¡plunging¡¡it¡¡into¡¡cold¡¡water¡£¡¡Bones£»¡¡leather£»¡¡hoofs£»¡¡and¡¡horns¡¡of¡¡
animals£»¡¡are¡¡best¡¡for¡¡this¡¡purpose£»¡¡after¡¡having¡¡been¡¡burnt¡¡or¡¡roasted£»¡¡so¡¡
that¡¡they¡¡can¡¡be¡¡pulverized¡£¡¡Soot¡¡is¡¡very¡¡frequently¡¡used£»¡¡it¡¡answers£»¡¡but¡¡
not¡¡so¡¡well¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡139¡£¡¡TO¡¡SOFTEN¡¡IRON¡¡OR¡¡STEEL
Either¡¡of¡¡the¡¡following¡¡simple¡¡methods¡¡will¡¡make¡¡iron¡¡or¡¡steel¡¡as¡¡soft¡¡as¡¡
lead£º¡¡¡­¡¡1¡£¡¡Anoint¡¡it¡¡all¡¡over¡¡with¡¡tallow£»¡¡temper¡¡it¡¡in¡¡a¡¡gentle¡¡charcoal¡¡
fire£»¡¡and¡¡let¡¡it¡¡cool¡¡of¡¡itself¡£¡¡2¡£¡¡Take¡¡a¡¡little¡¡clay£»¡¡cover¡¡your¡¡iron¡¡
with¡¡it£»¡¡temper¡¡in¡¡a¡¡charcoal¡¡fire¡£¡¡3¡£¡¡When¡¡the¡¡iron¡¡or¡¡steel¡¡is¡¡red¡¡hot£»¡¡
strew¡¡hellebore¡¡on¡¡it¡£¡¡4¡£¡¡Quench¡¡the¡¡iron¡¡or¡¡steel¡¡in¡¡the¡¡juice£»¡¡or¡¡water£»¡¡
of¡¡common¡¡beans¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡140¡£¡¡SOLDER¡¡FOR¡¡LEAD
Melt¡¡1¡¡part¡¡of¡¡block¡¡tin£»¡¡and¡¡when¡¡in¡¡a¡¡state¡¡of¡¡fusion£»¡¡add¡¡2¡¡parts¡¡of¡¡
lead£»¡¡if¡¡a¡¡small¡¡quantity¡¡of¡¡this£»¡¡when¡¡melted£»¡¡is¡¡poured¡¡upon¡¡the¡¡table£»¡¡
there¡¡will£»¡¡if¡¡it¡¡be¡¡good£»¡¡arise¡¡little¡¡bright¡¡stars¡¡upon¡¡it¡£¡¡Resin¡¡should¡¡
be¡¡used¡¡with¡¡this¡¡solder¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡141¡£¡¡SOLDER¡¡FOR¡¡TIN
Take¡¡4¡¡parts¡¡of¡¡pewter£»¡¡1¡¡of¡¡tin£»¡¡and¡¡1¡¡of¡¡bismuth£»¡¡melt¡¡them¡¡together£»¡¡
and¡¡run¡¡them¡¡into¡¡thin¡¡slips¡£¡¡Resin¡¡is¡¡also¡¡employed¡¡in¡¡using¡¡this¡¡solder¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡142¡£¡¡SOLDER¡¡FOR¡¡IRON
¡¡¡¡¡¡¡¡The¡¡best¡¡solder¡¡for¡¡iron¡¡is¡¡good¡¡tough¡¡brass£»¡¡with¡¡a¡¡little¡¡borax¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡143¡£¡¡SOLDER¡¡FOR¡¡COPPER
Take¡¡of¡¡brass£»¡¡6¡¡parts£»¡¡zinc£»¡¡1¡¡part£»¡¡tin£»¡¡1¡¡part£»¡¡melt¡¡all¡¡together£»¡¡mix¡¡
well£»¡¡and¡¡pour¡¡out¡¡to¡¡cool¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡144¡£¡¡SOLDER¡¡FOR¡¡STEEL¡¡JOINTS
¡¡¡¡¡¡Silver£»¡¡19¡¡parts£»¡¡copper£»¡¡1¡¡part£»¡¡brass£»¡¡2¡¡parts£»¡¡melt¡¡all¡¡together¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡145¡£¡¡HARD¡¡SOLDER
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Fuse¡¡together¡¡2¡¡parts¡¡of¡¡copper£»¡¡and¡¡1¡¡of¡¡zinc¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡146¡£¡¡SOLDER¡¡FOR¡¡SILVER
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Fuse¡¡together¡¡5¡¡parts¡¡of¡¡silver£»¡¡and¡¡1¡¡part¡¡of¡¡brass¡£







¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡147¡£¡¡GOLD¡¡SOLDER¡¡No¡£¡¡1
¡¡Take¡¡of¡¡gold£»¡¡4¡¡parts£»¡¡silver£»¡¡3¡¡parts£»¡¡copper¡¡1¡¡part£»¡¡and¡¡zinc£»¡¡1¡¡part¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡148¡£¡¡GOLD¡¡SOLDER¡¡No¡£¡¡2
¡¡¡¡Take¡¡of¡¡gold£»¡¡3¡¡parts£»¡¡silver£»¡¡3¡¡parts£»¡¡copper£»¡¡1¡¡part£»¡¡zinc£»¡¡1/2¡¡part¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡149¡£¡¡GOLD¡¡SOLDER¡¡No¡£¡¡3
Take¡¡of¡¡gold£»¡¡2¡¡parts£»¡¡silver£»¡¡3¡¡parts£»¡¡copper£»¡¡1¡¡part£»¡¡and¡¡zinc¡¡1/2¡¡a¡¡
part¡£¡¡The¡¡gold£»¡¡silver£»¡¡and¡¡copper¡¡must¡¡be¡¡fused¡¡in¡¡a¡¡crucible¡¡before¡¡the¡¡
zinc¡¡is¡¡added£»¡¡or¡¡else¡¡you¡¡cannot¡¡keep¡¡them¡¡in¡¡the¡¡vessel¡¡while¡¡heating¡£¡¡
When¡¡all¡¡are¡¡completely¡¡fused£»¡¡they¡¡must¡¡be¡¡well¡¡stirred£»¡¡and¡¡run¡¡into¡¡
bars¡£¡¡Solder¡¡No¡£1¡¡is¡¡for¡¡gold¡¡16¡¡carats¡¡and¡¡upwards£»¡¡No¡£2¡¡is¡¡for¡¡that¡¡14¡¡
carats¡¡fine£»¡¡and¡¡No¡£3¡¡for¡¡lower¡¡qualities¡£¡¡If¡¡more¡¡zinc¡¡is¡¡added£»¡¡it¡¡will¡¡
fuse¡¡at¡¡a¡¡lower¡¡heat£»¡¡but¡¡the¡¡colour¡¡is¡¡not¡¡so¡¡good¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡150¡£¡¡MOCK¡¡GOLD
Fuse¡¡together¡¡16¡¡parts¡¡of¡¡copper£»¡¡7¡¡of¡¡platinum£»¡¡and¡¡1¡¡of¡¡zinc¡£¡¡When¡¡steel¡¡
is¡¡alloyed¡¡with¡¡1/500¡¡part¡¡of¡¡platinum£»¡¡or¡¡with¡¡1/500¡¡part¡¡of¡¡silver£»¡¡it¡¡
is¡¡rendered¡¡much¡¡harder£»¡¡more¡¡malleable£»¡¡and¡¡better¡¡adapted¡¡for¡¡all¡¡kinds¡¡
of¡¡cutting¡¡instruments¡£¡¡Note¡£¡¡¡­¡¡In¡¡making¡¡alloys£»¡¡care¡¡must¡¡be¡¡taken¡¡to¡¡
have¡¡the¡¡more¡¡infusible¡¡metals¡¡melted¡¡first£»¡¡and¡¡afterwards¡¡add¡¡the¡¡
others¡£

151¡£¡¡BRITANNIA¡¡METAL
Take¡¡4¡¡parts¡¡of¡¡brass£»¡¡and¡¡4¡¡parts¡¡of¡¡tin£»¡¡when¡¡fused¡¡add¡¡4¡¡parts¡¡of¡¡
metallic¡¡bismuth£»¡¡and¡¡4¡¡parts¡¡of¡¡metallic¡¡antimony¡£¡¡This¡¡composition¡¡is¡¡
added¡¡at¡¡discretion¡¡to¡¡metallic¡¡tin£»¡¡according¡¡to¡¡the¡¡quality¡¡you¡¡wish¡¡to¡¡
make¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡152¡£¡¡BLANCHED¡¡COPPER
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Melt¡¡together¡¡8¡¡parts¡¡of¡¡copper¡¡and¡¡a¡¡half¡¡part¡¡of¡¡arsenic¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡153¡£¡¡COMMON¡¡PEWTER
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Melt¡¡together¡¡4¡¡parts¡¡of¡¡tin¡¡and¡¡1¡¡part¡¡of¡¡lead¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡154¡£¡¡BEST¡¡PEWTER
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Melt¡¡together¡¡100¡¡parts¡¡of¡¡tin¡¡and¡¡17¡¡of¡¡antimony¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡155¡£¡¡A¡¡METAL¡¡THAT¡¡EXPANDS¡¡IN¡¡COOLING
Melt¡¡together¡¡9¡¡parts¡¡of¡¡lead£»¡¡2¡¡of¡¡antimony¡¡and¡¡one¡¡of¡¡bismuth¡£¡¡This¡¡
metal¡¡is¡¡very¡¡useful¡¡in¡¡filling¡¡small¡¡defects¡¡in¡¡iron¡¡castings£»¡¡&c¡£

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡156¡£¡¡QUEEN'S¡¡METAL
¡¡Melt¡¡together¡¡9¡¡parts¡¡of¡¡tin£»¡¡1¡¡of¡¡antimony£»¡¡1¡¡of¡¡bismuth£»¡¡and¡¡1¡¡of¡¡lead

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡157¡£¡¡IMITATION¡¡PLATINUM
This¡¡metal£»¡¡or¡¡alloy£»¡¡very¡¡closely¡¡resembles¡¡platinum¡£¡¡Melt¡¡together¡¡8¡¡
parts¡¡of¡¡brass¡¡and¡¡5¡¡parts¡¡of¡¡zinc¡£






¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡158¡£¡¡CHINESE¡¡WHITE¡¡COPPER
Melt¡¡together¡¡40¡£4¡¡parts¡¡of¡¡copper£»¡¡31¡£6¡¡parts¡¡of¡¡nickel£»¡¡25¡£4¡¡of¡¡zinc£»¡¡
and¡¡2¡£6¡¡of¡¡

·µ»ØĿ¼ ÉÏÒ»Ò³ ÏÂÒ»Ò³ »Øµ½¶¥²¿ ÔÞ£¨0£© ²È£¨0£©

Äã¿ÉÄÜϲ»¶µÄ