REPRODUCTION—Continued. 
pearance of ferment in flaccid chrysalids, 42—Examination of the worms 
for pébrine corpuscles, 42—Isolation and examination of the moth, 42— 
Hastening development of moth, 43—Method employed by M. Maillot, 43— 
Selection of cocoons for breeding purposes, 43—Forming chains of cocoons, 
44—Bags for egg-laying, 44—Cells used by the Department, 45—Method 
of clamping shells, 45—Cell used in the Pasteur system of egg-laying, 45— 
Time at which moths emerge from cocoon, 46—Separation of mating 
couples, 46—Removal of females to cells, 46—Microscopical examination 
of moths after laying eggs, 46. 
CHAPTER VII. 
ES ESO ot ee So Se ee ae Re a = 
Different methods of choking the chrysalis, 47—Drying cocoons, 47—Warning 
against ‘‘ museum pests,” 47. 
CHAPTER VIII. 
Ep Rien Si SS ee a ee ae ee a aS eee pe 
Spun, reeled, and thrown silk, 49—The process of silk-reeling, 49—Sorting the 
cocoons, 49—Process of reeling cocoons, 50—‘‘ Cooking,” ‘‘ brushing,” and 
cleansing,” 50—Elements of the mechanism of all modern silk-reels, 50— 
Chambon system, 51—Tavellette system, 51—Fineness of the cocoon fila- 
ment, 51—‘‘ Lancing” of the filaments, 51—Mechanical devices for lancing, 
52—Temperature of water while reeling, 52—Importance of cleanliness, 
52—Composition of fresh cocoons by weight, 52—Percentage of silk in 
cocoons, 52. 
CHAPTER Ix 
ch ehOPeRtTiks OF REELED SILK... 220. is. so. cc-~ ence cece nscenscoenccns 
“Dramming” of silk, 53—Principles of the serigraph, 53—Serimeter, 54— 
Elasticity or ductility of silk, 54—Tenacity of silk, 55—Composition of 
the silk in the cocoon, 55—Hygrometric property of silk, 55. 
CHAPTER X. 
SN EE ler alee ren a ein Sal a en Sone onile = Sob in eo eee sec we eee 
Indigenous species of Mulberry, 56—Imported species of Mulberry, 56—The 
Moretti, 56—Russian Mulberry, 56—Paper Mulberry, 56n—Propagation 
by cuttings, 56—Growing standard high trees, 57—Amount of water of 
vegetation in Mulberry leaves, 57—Amount of mineral matter in Mul- 
berry leaves, 57—Osage Orange, 58—The secret of successful rearing of 
Silk-worms on this plant, 58—Selection of Maclura leaves for food, 58— 
Lettuce leaves, 59. 
G LOSSARY OF TERMS USED......... . 
EXPLANATION TO PLATES ...... 2222 .-2--0 
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