Graphite
Graphite (fa., Graphite ; Gan., Graphit). Graphite Is Also Called " Plumbago " And " Blacklead," Misnomers Associated With The Erroneous Idea That Lead Enters Into Its Composition. This Valuable Mineral Is Now Recognized As A Native Form Of Carbon ; Its Chemical Properties, However, Have Yet To Be Fully ...
Greens
Greens. Baryta Green.—mix 2 Parts Caustic Soda And 1 Part Chlorate Of Potash, And Gradually Add 2 Parts Very Finely Powdered Manganese ; Heat Gradually Up To Dull Redness, Then Allow To Cool, Powder, And Exhaust With Water ; Filter And Cool, And Add A Solution Of Nitrate Of Baryta ...
Greens 1
Greens : (1) Methyl Green (11 Lb.).—dissolve In Boiling Water 7, Oz. Tannin ; Lay The Bleached Cotton Overnight In The Hot Solution ; Wring Out ; Dye In Cold Water With A Solution Of The Colour According To Shade. Wring Out, And Dry In The Dark, Without Washing. (2) ...
Hair Manufactures
Hair Manufactures. Since The Beginning Of The Present Century, Hair, As Distinguished From Wool, Has Been Largely Manufactured. The Chief Sources Of Supply Of This Class Of Fibre Are The Group Of Animals Repre Sented By The Alpaca, The Capriue Tribe, The Camel, The Horse, The Ox, And The Hog. ...
Hand Made
Hand-made Cordage.—in Those Establishments Where The Manufacture Of Ropes Is Still Carried On By Hand, The First Operation Is " Hackling." A Certain Quantity Of Hemp Is Weighed To The Heckler, And Given Proportions Of This Arc Combed Out At One Operation. The Hackle Or Heckle Consists Of A Number ...
Hand Made Lace
Hand-made Lace. —lace Proper, Or Hand-made Lace, Usually Consists Of Two Parts : A Ground Of Plain Nets Ork, Composed Of Honeycombed Or Six-sided Meshes, Formed In Different Ways, According To The Variety Of The Article Being Produced. On This Ground, The Second Part, The Pattern, Is Worked. Sometimes The ...
Hides Used For
Hides Used For Sole-leather.—the Principal Sources Of Hides For Sole-leather Are :— (i.) Market Hides, From The Cattle Slaughtered For Food In The United Kingdom. These Are Received By The Tanner, Fresh Or Slightly Salted, And Are Either Bought Directly From The Butcher, Or, Now More Commonly, Through The Auction ...
Honey
Honey (fn., Mid; Ger., Honig). Honey Is A Substance Possessing A Pleasant Saccharine Taste, Produced From The Nectar Of Flowers By The Aid Of Certain Insects, Of Which The Bee Is The Most Important And Familiar. The Saccharine Matter Is Obtained From Flowers In Infiniteahnal Proportions, About 2} Million Flowers ...
Hops Fr
Hops (fr., Houblons; Ger., Hopfen). The Term " Hops " Is Given To The Leafy, Cone-like Catkins, Or Imbricated Beads (" Strobili "), Of The Hop-plant (humulus Lupulus), For The Sake Of Which Many Varieties Of It Are Cultivated. Hop-growing Requires A Moderately Warm Climate. In This Country, A South-east ...
Horn Manitfaotores
Horn Manitfaotores Combs.—horns Which Are To Be Manufactured Are First Thrown Into Water, By Which Slight Putrefaction Is Caused, Ammonia Is Liberated, And The Horn Begins To Soften ; The Softening Is Then Continued By Immersion In An Acid Bath, For A Period Of About 2 Weeks. When Sufficiently Soft, ...
Indiarubber Manufactures
Indiarubber Manufactures. Under The Term "indiarubber Manufactures," Will Be Included A Description Of The Manufacture Of Those Articles In Which Indiarubber Or Caoutchouc, Guttapercha, And Some Allied Exudations Are Largely Employed. For An Account Of The Raw Materials, The Reader Ie Referred To The Article On Resinous Substances. The Name ...
Ivory Fr
Ivory (fr., Moire, Ger., Elfenbein). The Term " Ivory " Is Properly Restricted To That Substance Which Forms The Main Body Of The Long, Projecting, Horn-like Teeth, Called "tusks," Of The Elephant, And The Other Prohoscidian Quadrupeds Belonging To The Two Genera, Elephas And Mastodon. It Is The Only Form ...
Java Assam
Assam, Java, Penang, And Rangoon.—assam Rubber Is Derived 'tiniest Entirely From Ficus Elastica, A Small Portion Being Obtained From Urostigma Laccifera. Ficus Elastica Grows Wild Along The Foot And In The Low Tropical Valleys Of The Himalayas, From The Mechi River On The Nepal Boundary At 88° E. Long., To ...
Jute Manufactures
Jute Manufactures. The Use Of Jute As A Textile Fibre, Though Known Ages Since In India, Is Only Of Recent Introduction Into This Country. After The Manufactures Of India Had Been Made Familiar To The English Public, Attention Was Turned To The Raw Products Of The Country, Amongst Which The ...