CONTENTS. 
XXI 
Chapter VII. 
Page. 
Of Rearing S ilk- Worms during the First Period of 
the Fifth Age, until they prepare to rise on the Hedge 
or Espalier ........ 126 
1. Necessity of the Barometer to ascertain the Degree 
of Moisture in the Atmosphere .... 134 
2. Of the Fumigating Bottle for Purifying the Air of 
the Laboratory . . . . . . .140 
3. Of the Means of Easily Drying the Mulberry-leaves 
even in uninterrupted Rain 150 
4. Of Rearing Silk-Worms until the period of complete 
maturity . . . . . . . . .154 
Chapter VIII. 
Of Reariny Silk- [Forms in the Last Period of the 
Fifth Age, until the Completion of the Cocoon. 
Observations on the Subject ..... 171 
1. Perfect Completion and Maturity of the Silk- 
Worms ......... 174 
2. First Preparation to form the Hedges . . . 175 
3. Last Meal given to the Silk-Worms . . . 178 
4. Cleaning of the Wicker Hurdles. Finishing of the 
Hedges on which the Worms are to Rise . . . 179 
5. Separation of the Worms that will not Rise. Last 
Cleansing of the Wicker Hurdle .... 184 
6. Care of the Laboratory until the Silk-Worms have 
accomplished the Fifth Age 187 
7. Quantity of excremental Steam and Gaseous Sub- 
stances discharged by the W orms, from the moment 
of their highest Perfection and utmost Growth, until 
the Completion of the Cocoon ..... 195 
