OBSERVATIONAL LESSON XXXI 119 



SUGGESTIONS FOR FURTHER WORK IN SCHOOL 



Keep one or two galls singly in small wide-mouthed bottles, which 

 are fitted with corks.* The insects which will issue from each gall 

 in the future, may then be noted and examined. 



PART IV THE SILKWORM (continued, 3rd Investigation) 

 PREPARATION FOR WORK 



If by this time some of the silkworms have begun to " spin " (which they should 

 do about this time in small paper cones provided for the purpose), specimens should 

 be distributed in their papers. 



DIRECTIONS TO THE PUPIL 



(6) Make a careful note as to the way in which the silkworm 

 caterpillar makes its cocoon. 



Note: If the caterpillars are still feeding, this work must be 

 postponed. 



* See Appendix, under the heading of Chapter XXIV. 



