[C] Hatters' kettles for FUR hatting are made of copper, as they take less firing than those that are made of lead. But lead must be the metal if sulphuric acid, no matter in how small quantity, is used in the water. It is generally resorted to by the men in sizing WOOL hats, as it facilitates the felting operation. This acid (vitriol), having no affinity for lead, does not affect the kettle, while it would soon eat the one of copper through. Care, however, must be taken that no stone be let fall into the water of the lead kettle, for a hole will soon result from such an accident. [D] As every hat must be finished upon a block of some particular form, upon which the hat assumes the exact counterpart, it becomes necessary with those having broad tops, that the block be in five separate pieces, so as to get them out or into the hat, the centre piece acting as a wedge to the whole. INDEX. Acid aids fulling, 21 Alkali stiff, 33 Analysis of hair, 12 Ancient hats, 26 Basket, hat, 40 Battery for sizing, 41 Bleaching of hair, 14 Block for hats, 47 Blocking, 47 Blowing machine, 35 Body making, 41 Bowing, 39 Bow-pin, 39 Broadcloth, properties of, 19 Cardinal's hats, 26 Carroting, 29 Cassimere hats, 48 Chemical analysis of hair, 12 Cloth hats, 63 Coloring, 47 Conclusion, 65 Construction of hair, 16 Cotton, why it does not felt, 17 Description of furs, wools, hair, &c., 11 Dressing, 56 Dyeing, 47 Dyes, 48 Elizabeth, Queen, patent, 28 Familiar proofs of felting, 17 Fashions, 28 Felting, 14 familiar proofs of, 17 inventor of, 27 when invented, 22 Felt made by Turcomans, 21 uses of, 22 Festival of hatters, 29 Fine wool, introduction into the United States, 23 Finishing, 49 First account of hatters, 27 Flowing nap, 43 Forming, 56 machines, 57-59 Fulling, 14 acid aids, 21 mill, 24 oil prevents, 21 process of, 25 soap aids, 21 Fur, kinds of, 20 qualities of, 14 Furs, description of, 11 how prepared, 29 inferior articles employed with, 22 low prices of in early times, 23 Gaiters of felt, 60 Glue, pelts used for, 31 Goods, shrinking of, 15 Gordian knot, 19 Gossamer hats, 53 Grease prevents fulling, 21 Hair balls in the stomach, 19 bleaching of, 14 chemical analysis of, 12 construction of, 16 description of, 11 how it grows, 12 peculiar properties of, 15 why it felts, 14 Hairs, number of, 17 Hat basket, 40 block, 47 bow, 39 iron, 49 Hats, ancient, 26 cardinal's, 26 cassimere, 48 cloth, 63 history of, 25 manufacture of, 36 scarlet, 26 Spanish, 28 Hatters' festival, 29 first account of, 27 kettles, 46 Hatting, history of, 25 in the United States, 27 silk, 52 History of hats and hatting, 25