Knight's Mechanical Encyclopedia, P., Puz′zle.

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19th-Century American

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chapter : entry
entry

Table of Contents:

Pach-om′e-ter.

Pack′ag-ing-ma-chine′.

Pack′et-note.

Pack′ing-awl.

Pack′ing-bolt.

Pack′ing-box.

Pack′ing-press.

Pack′ing-ring.

Pack′ing-stick.

Pack-sad′dle.

Pad-crimp press.

Pad′ding-ma-chine′.

Pad′dle-box boat.

Pad′dle-hole.

Pad′dle-pro-pel′ler.

Pad′dle-wheel.

Pad-trace Bear′er.

Pad-u-a-soy′.

Pae-dom′e-ter.

Pag′ing-ma-chine′.

Pail-ma-chine′.

Paint-burn′er.

Pair-horse Har′ness.

Paix ′han gun.

Pal′ate, Artifi′cial.

Pal′ette-knife.

Pal′ier-glis′sant.

Pal′imp-sest.

Pal-la′di-um-izing.

Pallam-poor′.

Pal′let-mold′ing.

Pal-li-asse′.

Palm-leaf loom.

Pan-a-ma′ hat.

Pan-de′an pipes.

Panei-cono-graph.

Pan′el-plane.

Pan′el-rais′er.

Pan-ic′o-graph.

Pan-nus-co′ri-um.

Pan-o-ram′ic Cam′e-ra.

Panste-re-o-ra′ma.

Pan-tel′e-graph.

Pan′to-chro-nom′e-ter.

Pan′to-graph.

Pan-tom′e-ter.

Pa′per-bag ma-chine′.

Pa′per-box ma-chine′.

Pa′per-clamp.

Pa′per cloth.

Pa′per Col′lar.

Pa′per-col′or-ing ma-chine′.

Pa′per-cut′ter.

Pa′per-cut′ting ma-chine′.

Pa′per-en-am′el-ing ma-chine′.

Pa′per-feed′er.

Pa′per floor-cloth.

Pa′per-fold′er.

Pa′per-fold′ing ma-chine′.

Pa′per-hang′ing.

Pa′per hot-press.

Pa′per-knife.

Pa′per-mak′ing ma-chine′.

Pa′per-mold′ing ma-chine′.

Pa′per-mus′lin.

Pa′per-per′fo-rating ma-chine′.

Pa′per-pol′ish-ing ma-chine′.

Pa′per-punch.

Pa′per-rul′ing ma-chine′.

Pa′per-split′ting.

Pa′per-stock Bleach′er.

Pa′per-stock Wash′er.

Pa′per-tube ma-chine′.

Pa′per-twine.

Pa′per Wa′ter-proof′ing Machine′.

Pa′per-weight.

Pa′pier-mache′.

Par-a-bol′ic Il-lu′mi-na′tor.

Par-a-bol′ic Reflect′or.

Par′a-cen-te′ri-um.

Par-a-chute′.

Par-a-chute′--light.

Par-a-chute′--light ball.

Par′a-gran′di-ne.

Par-a-grele′.

Par′al-lel bar.

Par′al-lel file.

Par′al-lel knife.

Par′al-lel lathe.

Par′al-lel Mo′tion.

Par′al-lel Rul′er.

Par′al-lel vise.

Para-ton-nerre.

Par′cel-ing-ma-chine′.

Parch′ment-pa′per.

Par′ing-ma-chine′.

Par′ing-plow.

Paring-scis′sors.

Par-is′ian gold-col′ored Al′loy.

Par-is′ian white-metal.

Pa-risth′mi-o-tome.

Par′lia-ment-heel.

Par′lor-skate.

Pa′ros-mar′ble.

Par′point-work.

Par′ral-rope.

Par′rott-gun.

Part′ing-sand.

Pas-de-sou′ris.

Passe-par-tout′.

Pass′ing-place.

Pasteboard-cut ′ter.

Paste-mak′er.

Pat ′a-mome-ter.

Pa-tel′la-ap′Pa-ra′tus.

Pat ′ent Leath ′er.

Pat ′e-re′ro.

Pa′ter-nos′ter — pump.

Pa′ter-nos′ter-wheel.

Pat ′tern-box.

Pat ′tern-cyl′in-der.

Pat ′tern-makers' Ap-pli′an-ces.

Pat ′tern-wheel.

Pat ′tin-son's pots.

Pa-vil′lon-chi-nois′.

Pav′ing-bee′tle.

Pav′ing-ma-chine′.

Pav′ing-roll′er.

Pav′ing-tile.

Peach-par′er.

Peach-ston′er.

Pea-drop′per.

Peak-hal′yards.

Pea′nut-dig′ger.

Pea′nut-pick′er.

Pearl , Arti-fi′cial.

Pearl-barley ma-chine′.

Pearl-but′ton.

Pearl ′ing-mill.

Pearl-pow′der.

Pea-shell′er.

Peat-burn′ing Furnace.

Peat-cut ′ter.

Peat-ma-chine′.

Peb′ble-pav′ing.

Pedal-or′gan.

Ped′es-tal-cov′er.

Ped′i-ment-ba-rom′e-ter.

Pe-dom′e-ter.

Peel ′ing-i′ron.

Peg-cut ′ter.

Peg′ging-awl.

Peg′ging-ma-chine′.

Peg′ging-ram′mer.

Pei-ram′e-ter.

Pel′le-tan-jet.

Pel-vim′e-ter.

Pely-com′e-ter.

Pen′cil-com′pass.

Pen′cil-sharpen-er.

Pen′dant-wind′ing watch.

Pendu-lous-cylin-der steam-en′gine.

Pen′du-lum-hausse.

Pen′du-lum-lev′el.

Pen′du-lum-pump.

Pen′du-lum-wheel.

Pen′du-lum-wire.

Pen-i-cil′lus.

Pe′nis-syringe.

Pen′nis-tone.

Pen′ta-graph.

Per-am′bu-lator.

Per-ca-line′.

Per′co-la-tor.

Per-cus′sion-cap.

Per-cus′sion-cap Filling-ma-chine.

Per-cus′sion-cap Hold′--er.

Per-cus′sion-cap Trim′ming-ma-chine.

Per-cus′sion-fuse.

Per-cus′sion-grind′er.

Per-cus′sion-lock.

Per-cus′sion-pow′der.

Per-cus′sion-sieve.

Per-cus′sionstop.

Per-cus′sionta′ble.

Per′fect-ing.

Per′fect-ing-press.

Per′fo-rat′ed file.

Per′fo-rated saw.

Per′fo-rat′ing-ma-chine′.

Per′fo-rator, Ob-stet′ric.

Per′i-a′gua.

Pe-ri-od′o-scope.

Peri-os′te-um-el′e-va-tor.

Per′i-scop′ic lens.

Per′ma-nent way.

Per-mu-ta′tion-lock.

Per′pen-dic′u-lar lift.

Per-pet′u-al Mo′tion.

Per-pet′u-al screw.

Per-ro-tine′.

Per′sian Carpet.

Per′sian drill.

Per′sian wheel.

Per-spec′tive-glass.

Per-spec′tive-instru-ment.

Per-spec′to-graph.

Pe-tro′le-um.

Pe-tro′le-um-burn′er.

Pe-tro′le-um-car.

Pe-trole-um-fil′ter.

Pe-tro′le-um-fur′nace.

Pe-tro′le-um-lamp.

Pe-tro′le-um-still.

Pe-tro′le-um-stove.

Pe-tro′le-umtank.

Pe-tro′le-umtest′er.

Pet′ti-coat-pipe.

Pew′ter-er's Sol′der.

Pew′ter-er's Tem′per.

Pha′co-cys′tec-tome.

Phan-tasma-go′ri-a.

Phan′ta-scope.

Pha-ryn′go-tome.

Phena-kis′to-scope.

Pho-nau′to-graph.

Pho′no-graph.

Pho′no-scope.

Phos′phor bronze.

Phos-phor′o-scope.

Phos′pho-rus-paste.

Pho′to-e-lec′tric lamp.

Pho′to-e-lec′tro-type.

Pho′to-en-grav′ing.

Pho′to-gal-van′o-graph.

Pho′to-gel′a-tine Pro′cess.

Pho-to-gen′ic Draw′ing.

Pho-to-glyph′ic En-grav′ing.

Pho-to-glyp′tic En-grav′ing.

Pho′to-graph-e-namel.

Pho-to-graph′ic Cam′e-ra.

Pho-to-graph′ic Cam′e-ra-stand.

Pho-to-graph′ic chair.

Pho-to-graph′ic Cut′ter.

Pho-to-graph′ic head-rest.

Pho-to-graph′ic mi-crom′e-ter.

Pho-to-graph′ic Print′ing.

Pho-togra-phom′e-ter.

Pho-tog′ra-phy

Photo-he′li-o-graph.

Photo-hy-al′o-type.

Pho′to-in-tagl′io En-graving.

Photo-li-thogra-phy.

Pho′to-me-chan′i-cal Print′ing.

Pho′to-me-tallo-graph.

Pho-tom′e-ter.

Photo-mi-cog′ra-phy.

Pho′to-pro′cess-es.

Pho′to-re-lief′ En-grav′ing.

Pho′to-scope.

Pho′to-sculp′ture.

Pho′to-vit′ro-type.

Photo-zin-cog′ra-phy.

Phthon-gom′e-ter.

Pi-a′no-for′te.

Pi-a′no-for′te Ac′tion.

Pi-a′no-for′te Ham ′mer.

Pi-a′no-graph.

Pi-a′no-jack.

Pi-a′no-lock.

Pi-a′no-move′ment.

Pi-a′no-stool.

Pio ′co-lo-flute.

Pick′er-mo′tion.

Pick′er-staff.

Pick′et-clamp.

Pick′et-point′er.

Pick-ham′mer.

Pick′ing cloth.

Pick′ing-peg.

Pick′ing-stick.

Pic′ture-nail.

Pierc′ing-file.

Pierc′ing-saw.

Pierre per-due′.

Pi-e′tra Du′ra.

Pie-zom′e-ter.

Pig′eon, Me-chan′i-cal.

Pig-i′ron Break′er.

Pig′mentprint′ing.

Pile-car′pet.

Piled-fab′ric loom.

Pile-draw′er.

Pile-driv′er.

Pile-fab′ric.

Pile-sup-port′er.

Pile-with-draw′ing ma-chine′.

Pil′lar-block.

Pil′lar-com′pass.

Pil′lar-file.

Pill-ma-chine′.

Pil′low-block.

Pil′low-lace.

Pi-lon′--mill.

Pi′lot-cloth.

Pi′lot-en′gine.

Pinch′ing-bar.

Pinch′ing-nut.

Pinch′ing-pin.

Pinch′ing-tongs.

Pine-leaf Fab′ric.

Pine-wood still.

Pin′ion-file.

Pin′ion-gage.

Pin′ion-wire.

Pink′ing–i′ron.

Pin′ning–in.

Pin–pa′per-ing ma-chine′.

Pipe–clear′er.

Pipe–coup′ling.

Pipe–cut′ter.

Pipe-driv′er.

Pipe-mold′ing.

Pipe-prov′er.

Pipe-slotting punch.

Pipe-sock′et-ing ma-chine′.

Pipe-thread′ing ma-chine′.

Pip′ing-i′ron.

Pi-que′--work.

Pi-ram′e-ter.

Pi-se — work.

Pis′tol-car′bine.

Pis′tol-pipe.

Pis′tol-rout′er.

Pis′ton-bel′lows.

Pis′ton Blow′ing-ma-chine′.

Pis′ton-head.

Pis′ton-head valve.

Pis′ton-pack′ing.

Pis′ton–rod.

Pis′ton–rod Pack′ing.

Pis′ton–spring.

Pis′ton–valve.

Pitch–back wheel.

Pitch–cir′cle.

Pitched Fas-cine′.

Pitch′ing–piece.

Pitch′ing–tool.

Pitch–wheels.

Pit′man–box.

Pit′man–coup′ling.

Pit′man–head.

Pi-tot's′ tube.

Piv′ot-bridge.

Piv′ot-broach.

Piv′ot-drill.

Piv′ot-gear′ing.

Piv′ot-lathe.

Piv′ot-tooth.

Piv′ot-tran′som.

Pla-cen′ta-for′ceps.

Pla-cen′ta-hook.

Plain-com′pass.

Plain-mold′ing.

Plait′ed rope.

Plait′ing-at-tach′ment for Sew′ing-ma-chines′.

Plan-chette′.

Plane-ash′lar.

Plan′er-cen′ters.

Plane-sur′face.

Plane-ta′ble.

Plan-et-a′ri-um.

Plan′et-gear.

Plan′et-wheel.

Pla-nim′e-ter.

Plan′ing-ma-chine′.

Plan′ish-ing.

Plan′ish-ing-ham′mer.

Plan′ish-ing-roll′ers.

Plan′ish-ing-stake.

Plan′i-sphere.

Plank ′ing-clamp.

Plank ′ing-ma-chine′.

Plank ′ing-screw.

Plank-re-vet′ment.

Pla′no-con′cave lens.

Pla′no-con′vex lens.

Pla-nom′e-ter.

Plan-ta′tion-mill.

Plaq′uage-style.

Plas′ter-cast.

Plas′ter-ers' tools and work.

Plas′ter-ing-ma-chine′.

Plas′ter-mill.

Plas′ter-spat′u-la.

Plate-bend ′ing ma-chine′.

Plate-en-grav′ing.

Plate-hold′er.

Plate-i′ron Gird′er.

Plate-leath′er.

Plate-pa′per.

Plate-plan′ing ma-chine′.

Plate-pow′der.

Plate-print′ing ma-chine′.

Plate-rail′way.

Plate-roll′er.

Plate-warm′er.

Plat′form-board.

Plat′form-bridge.

Plat′form-car.

Plat′form-car′riage.

Plat′form-crane.

Plat′form-scale.

Plat′i-niz-ing.

Plat′i-num-steel.

Pla-tom′e-ter.

Plat′ ten -ing glass.

Plensh′ing-nail.

Plex-im′e-ter.

Plot′ting-scale.

Plow-clean′er.

Plug-cen′ter bit.

Plug′ging-for′ceps.

Plug-ma-chine′.

Plumb ′er-block.

Plumber's force-pump.

Plumb ′er's Sol′der.

Plumb ′ing and sheet-met′al work and tools.

Plumb-lev′el.

Plum ′mer-block.

Plum ′met-lev′el.

Plun′ger-buck′et.

Plun′ger-pole.

Plun′ger-pump.

Plun′ging-bat′ter-y.

Plun′ging-fire.

Plush-cop′per.

Pluvi-am′e-ter.

Pneu-mat′ic Bat′ter-y.

Pneu-mat′ic Cais′son.

Pneu-mat′ic car.

Pneu-mat′ic dis-patch′--tube.

Pneu-mat′ic drill.

Pneu-mat′ic El′e-va′tor.

Pneu-mat′ic Ham ′mer.

Pneu-mat′ic hoist.

Pneu-mat′ic Le′ver.

Pneu-mat′ic Par′a-dox.

Pneu-mat′ic pile.

Pneu-mat′ic pump.

Pneu-mat′ic Rail′way.

Pneu-mat′ic spring.

Pneu-mat′ic Tel′e-graph.

Pneu-mat′ic trough.

Pneu-mat′ic tube.

Pneu-mat′ic tube-valve.

Pneu-mat′ic valve.

Pneuma-tom′e-ter; Pneumo-nom′e-ter .

Pock′et-a-larm′.

Pock′et-book.

Pock′et-knife.

Point′ed arch.

Point′ing-ma-chine′.

Point′ing-rods.

Point′ing-wire.

Point-pa′per.

Po′lar Cir′cle.

Po′lar clock.

Po′lar Di′al.

Po-lar′i-scope.

Polar-is-tro-bom′e-ter.

Pole-car′riage.

Pole-futch′el.

Po-lem′o-scope.

Pole-pro-pel′ler.

Pol′ished brick.

Pol′ish-ing-block.

Pol′ish-ing-cask.

Pol′ish-ing-file.

Pol′ish-ing glass.

Pol′ish-ing-ham′mer.

Pol′ish-ing-i′ron.

Pol′ish-ing-ma-chine′.

Pol′ish-ing-ma-te′ri-als.

Pol′ish-ing-mill.

Pol′ish-ing Nee′dles.

Pol′ish-ing-pow′der.

Pol′ish-ing-slate.

Pol′ish-ing-snake.

Pol′ish-ing-tin.

Pol′ish-ing-wheel.

Pol′y-chrome.

Pol-ym′e-ter.

Poly-op′tron.

Poly-pan′to-graph.

Pol′y-pus-for′ceps.

Poly-zo′nal lens.

Pon′til; Pon′ty ; Pon′tee .

Pon-ton′--bridge.

Po′ny-chaise.

Po′ny-en′gine.

Poop-lan′tern.

Pop′pet-head.

Por′ce-lain-cem′ent.

Por′ce-lain-gild′ing.

Por′ce-lain-mill.

Por′ce-lain-ov′en.

Por′ce-lain-pa′per.

Por′ce-lain-pic′ture.

Por′ce-lain-print′ing.

Porch-post Sup-port′.

Porphy-ri-za′tion.

Port′a-ble boat.

Port′a-ble Boil′er and Fur′nace.

Port′a-ble Der′rick.

Port′a-ble fence.

Port′a-ble Fur′nace.

Port′a-ble press.

Port′a-ble pump.

Port′a-ble Rail′way.

Port′a-ble steam-en′gine.

Port′a-ble stove.

Port-cul′lis.

Porte-ai-guille′.

Porte-bou-gie′.

Porte-caus-tique.

Porte-cor′don.

Porte-cray′on.

Porte-mon-naie′.

Porte-pi-erre′.

Porte-pol′ish-er.

Port-fire Clip′per.

Port-fol′io-stand.

Port-hole Clos′er.

Port′land Cement.

Port-lan′yard.

Port-man′teau.

Port mouth-bit.

Port-pen′dant.

Port-rig′gle.

Port-tack′le.

Pos′ing-appa-ra′tus.

Po-si′tion-mi-crom′--e-ter.

Pos′i-tive eye-piece.

Pos′i-tive Mo′tion.

Pos′i-tive-mo′tion loom.

Post′age-stamp.

Post and stall.

Post-hole Bor′er.

Post-hole Dig′ger.

Post-mor′tem case.

Post-of′fice box. 1 .

Post-pull′er.

Post-tab′u-la.

Po′tance-file.

Po-tas′si-um.

Po-ta′to-as-sort′er.

Po-ta′to-bug Clean′er.

Po-ta′to-dig′ger.

Po-ta′to-hook.

Po-ta′to-mash′er.

Po-ta′to-plant′er.

Po-ta′to-scoop.

Po-ta′to-sepa-ra′tor.

Po-ta′to-wash′er.

Potch′er-en′gine.

Poti-cho-ma′ni-a.

Pot′ter's lathe.

Pot′ter's wheel.

Pot′ter-y and clay.

Pot′ter-y-gage.

Pot′ter-y-kiln.

Pot′ter-y-mold′ing.

Pot′ter-y-paint′ing.

Pot′ter-y-print′ing.

Pot′ter-y-tis′sue.

Pot′ting-cask.

Pou-de-soy; Pad′e-soy ; Pod′de-soy .

Poul′tice-boot.

Poul′try-feed′er.

Pounce-pa′per.

Pouncing-ma-chine′.

Pounding-ma-chine′.

Pow′der-blow′er.

Powder-ing-mill.

Pow′der-mix′er.

Pow′der-prover.

Pow′er-ham′mer.

Poz′zu-o-la′na.

Praying-ma-chine′.

Pre-pon′der-ance.

Preser-va′tion of food.

Pre-serv′a-to-ry.

Pre-serve′--jar.

Pre-serv′ing wood.

Presse-ar-ter′.

Press′er-fly′er.

Press′er-foot.

Presse-u-rethre′.

Press′ing-bag.

Press′ing-board.

Press′ing-plate.

Press′ing-roll′er.

Press-print′ing.

Press′ure-blow′er.

Press′ure-en′gine.

Pressure-fil′ter.

Press′ure-forg′ing.

Press′ure-frame.

Press′ure-gage.

Press-wheel Roll′er.

Prick′ing-wheel.

Prime-con-duct′or.

Prim ′ing-horn.

Prim ′ing-powder.

Prim ′ing-tube.

Prim ′ing-valve.

Prim ′ing-wire.

Prince Ru ′pert's Met′al.

Prince 's Met′al.

Prin′ci-pal Raft′er.

Print′ed Car′pet.

Print′er's Flow′er.

Print′er's gage.

Print′er's Roll′er.

Print′er's Var′nish.

Print-hold′er.

Print′ing-bod′y.

Print′ing for the blind.

Print′ing-frame.

Print′ing-ink.

Print′ing-ma-chine′.

Print′ing-pa′per.

Print′ing-press.

Print′ing-tel′e-graph.

Print′ing-type.

Print′ing-wheel.

Print′ing yarn.

Pris-cil′las.

Pris-mat′ic Com′pass.

Prism-mi-crom′e-ter.

Prism-sphe-rom′e-ter.

Proche-ame-ter.

Pro′file-cut′ter.

Pro′file-pa′per.

Pro′fil-ing-ma-chine′.

Pro-jec′tile.

Pro-jec′tion.

Pro-lap′sus-in′stru-ments.

Pro-me′the-an.

Prop′a-gating-box.

Prop′a-gating-glass.

Pro-pel′ler-en′gine.

Pro-pel′ler-pump.

Pro-pel′ler-wheel.

Pro-por′tion-al Com′pass-es.

Pro-por′tion-al or Prim′i-tive Ra′--di-i .

Prop′y-lae′um.

Pros′o-pom′e-ter.

Pro′te-an-stone.

Pro-tec′tive Pa′per.

Pro-tract′ing-bev′el.

Pro-tract′or.

Prov′ing-hutt.

Prov′ing-ma-chine′.

Prov′ing-press.

Prov′ing-pump.

Pro-vis′ion-car.

Prun′ing-chis′el.

Prun′ing-hook.

Prun′ing-knife.

Prun′ing-saw.

Prun′ing-shears.

Prun′ing-tools.

Pseudi-sod′o-mon.

Pseu′do-dipter-al.

Pseu′do-pe-rip′ter-al.

Pseu′do-scope.

Psy-chrom′e-ter.

Pter-yg′i-um.

Pud′ding-stone.

Pud′dled steel.

Pud′dle-rolls.

Pud′dling-fur′nace.

Pud′dling-ma-chine′.

Puff′er-pipe.

Pul′ley-block.

Pul′ley-check.

Pul′ley-clutch.

Pul′ley-drum.

Pul′ley-mor′tised.

Pul′ley-sheave.

Pul′ley-stand.

Pul′ley Sus-pen′--sion-hook.

Pul′ley-wheel.

Pull′ing-jack.

Pull′man-car.

Pulp-boil′er.

Pulp-di-gest′er.

Pulp-dress′er.

Pulp-grind′er.

Pulp′ing-ma-chine′.

Pulp-ma-chine′.

Pulp-strain′er.

Pulp-wash′er.

Pul-som′e-ter; pul-sim′e-ter .

Pul′ver-izer.

Pul′ver-izing.

Pum′ice-stone.

Pump′ing-en′gine.

Pump-ket′tle.

Pump-pis′ton.

Pump-scrap′er.

Punch′ing and Shear′ing ma-chine′.

Punch′ing-bear.

Punch′ing buhl-work.

Punch′ing-ma-chine′.

Punch-pli′ers.

Pu′pil, Arti-fi′cial.

Pup′pet-head.

Pup′pet-valve.

Pur′chase-block.

Purg′ing-cock.

Pur′lin-post.

Push′ing-jack.

Put′tock-shrouds.

Put′ty-knife.

Put′ty-pow′der.

Puz′zle-lock.

Puzzo-la′no; Puozzo-la′no .

Pyc′no-style.

Pyr-heli-om′e-ter.

Py-roph′o-rus.

Pyro-pho-tog′ra-phy.

Pyr′o-ster′e-o-type.

Pyro-tech′nics.

Pyro-tech′nic Bal-loon′.

Py-rox′--line.

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Puz′zle.

A contrivance for affording amusement and exercising the ingenuity by taking apart a set of connected devices, combining a number of separate pieces so as to produce one or more figures, finding the mode of entry in or egress from a space inclosed by a complicated series of lines, etc., etc. Sometimes the puzzle consists of a miniature ship or other device inclosed within an object which has no opening of sufficient size to admit the passage of the inclosure. Of this class are the Chinese puzzles, consisting of a series of balls one within the other, and all apparently carved out of a single piece.

The familiar toy, “puzzle-rings,” sold in the stores and on railroad-cars, — in which the ingenuity consists in getting the rings on and off a link, — engaged the pen and attention of Cardan in the sixteenth century; and the celebrated mathematician and philosopher, Dr. Wallis, has given a clear and elaborate description of the same instrument in the second volume of his works, under the title of “Complicati annuli,” or puzzling-rings.

1877.

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