xxn 
CONTENTS. 
Chapter IX. 
Page. 
Of the Sixth Age of the Silk- Worm, or Chrysalis; 
Gathering, Preservation, and Diminution in the 
Weight of the Cocoons ..... 198 
1. Gathering the Cocoon 199 
2. Choice of the Cocoon for the production of the Eggs 
or Seed . 204 
3. Preservation of the Cocoon intended for Seed . 210 
4. Daily loss in the Weight of the Cocoon, from its First 
Formation, till the appearance of the Moth . . 212 
Chapter X. 
Of the Seventh Aye of the Silk-Worm; of the Ap- 
pearance and Coupling of the Moths ; of the Lay- 
ing and Preservation of the Eggs . . . 215 
1. Appearance of the Moths ; their Coupling . . 219 
2. Separation of the Moths ; Laying of the Eggs . 226 
3. Preservation of the Eggs 234 
. Chapter XI. 
Observations on the Varieties of Silk-Worms, and the 
Essential Differences existing between the Leaf of 
the Grafted Mulberry-tree and Wild Midberry -leaf, 
when given to Silk- Worms of One Quality . . 237 
1. Of the Silk-Worms of Three Casts or Moultings . 239 
2. Of the Large Silk- Worms of Four Casts . • 241 
3. Of the Silk-Worms producing White Silk . . 242 
4. Of the Common Silk-Worm of Four Casts . . 2-13 
5. Comparison of the Leaf of the Grafted Mulberry, and 
that of the Wild Mulberry, when given to Silk- 
Worms of One Quality ..... 244 
