REARING SILKWORMS. 55 



TO PRESERVE SILKWORMS. 



In this advanced age, it is quite desirable to 

 have cases of preserved silkworms, as well as 

 other insects, for exhibition and demonstration 

 in schools and colleges. As a rule, this art is 

 neither known nor practiced by silk-culturists. 

 It seems too small an item of business to claim 

 their attention from the greater and more pleas- 

 ing work pertaining to the insect menagerie. 

 However, this work may be done by any person 

 whose taste and ambition run on scientific lines. 

 I will therefore give a formula, which, if strictly 

 followed, will insure success in this branch of 

 science. 



Get a bottle of hydroformalin at the druggist's. 

 Have a two-quart bottle of distilled rain-water. 

 Take ninety-six per cent of water and four per cent 

 of the formalin. Let it be thoroughly mixed. Then 

 take five pint or quart fruit-jars, according to the 

 number of worms you desire to handle. Have 

 the jars half or two-thirds full of the medicated 

 water and drop the worms in, each age in a sepa- 

 rate jar. The chrysalis may be put with worms 

 of the fifth age. They will not suffer long. 

 Whenever the water becomes discolored, pour off, 

 and put in fresh liquid from the large bottle. 



