t 175 ] ^24 



stove, essential to the reg-iilar hatching of siikuoi'ms, - . - GU 



Stove and basin, for heating water, dimensions of, - . . . 137- 



Sulphuring siJk, of, - - - . .... 137 



Silk, history of, - . . . . . . - IT 



in the United States, ■• - - - - 21 



weight cf a siiig-ie fibre of 5C»3 feet, - - . . . II4 



<juant'Uei. of, yielded i)V' various parcels of cocoons, . - - lift 



j^rep;<ratioiis for reeling, ....... 135 



disbanding of from the i-eel, --.... j^q 



prepai-ation of, after dis!)anding from the reel, - - - - 150 



waste, and ii.ferior qualities to spin, - . . . . 152 



T-eel, description of, and hgvirt,- --.... 155 



to WTwJ from the skeins on bobbin's, .... 158 



improved machinery for wearing, .... 172 177-8 



to spin double and twist, apparatus for, - - - . ! 173 



watering of, to pi-.3vi-;nt-, ....... 179 



to cleanse, previously to dying, ....... i82 



ungummiiig and boiling for white, ..... 134 



belling of, which is to be died, -..-.. 135 



sewing and twi;;!, mode of making in Connecticut, - - . I54 



■Jemperature projR-r for hatclung eggs of silkworms, - - - 65 



for silkworms in various stages, . - - . -72 



high, improper for hatching the eggs, - . - -72 



bad effects of a great or low in the fifth age, - - - ,96 



. ^ of the water, for reeling cocoons, causes which regulate it, - 139 



Terhoevens* American winding and twistmg machine, - - - 178 



Tliermometer, essential in tiie hatching and rearing of silkworms, . - 58 



Throwsting machine, figure of expl/nied, ..... 159 



Tramming engine, fgure of explained, - - . - . 161 



Tra\, portable, cut of one: See table, p. ISO, . . . - 61 



Tripes, a disease of silkwoi-ms, ^ - - . . . 135 



Tv/ist, how made in Connecticut, --.... 154 



Utensils useful in hatching and rearing silkworms, (and table, p. 180,) . 60, 61 



Va|K)r emitted from silkworms and hiter, ..... i04 



Varieties in silkworms, - - . . . - - 33 



in India, ■"-----. 36 



in China, "------. 41 



in the United States, and South America, - - - -41,42 



Ventilators requisite in the windows, floor, and ceiling of the laboratory, . ' 54 



A'ioiet, With logwood, to die, --..... 193 



Brazil wood and logwood, to die, .... 194 



■\Varping machine, -----... 152 



Watering of silks, without the use of a knee roil, method of preventing, - 179 



AVeaving of silks, improvements in, - - . . . . j-rs 



Weiglits of various parcels o' cocooiLS, - . . . - 117 



While, different shad"? of, . . . . . _ -,qc 



Winding, doubling, anr- twisting appai-atus, - - *. 1 6r] 169, 176, 177 

 veJlows, a disease of silkwonn^, . . . . .114. 



Yellow, on silk dying of, in hanks, - - . . 194 197 305 



^i^™"' - - ' - '2O6 



other processes, - . . . .,06, 207, 208, 214, 215 



dies in the Unued States. 



les 



