MANUAL 01' THE APIARY. 113 



This substance has great adhesive force, and though soft and 

 pliable when warm, becomes very hard and unyielding when 

 cold. 



The use of this substance is to cement the combs to their 

 supports, to fill up all rough places inside the hive, to seal up 

 all crevices except the place of exit, which they often con- 

 tract, and even to cover any foreign substance that cannot be 

 removed. Intruding snails have thus been imprisoned inside 

 the hive. Reaumur found a snail thus encased ; Maraldi, a 

 slug similarly entombed ; while I have myself observed a 

 bombus, which had been stripped by the bees of wings, hair, 

 etc., in their vain attempts at removal, also encased in this 

 unique style of a sarcophagus, fashioned by the bees. 



BIBLIOGRAPHY. 



For those who wish to pursue these interesting subjects 

 more at length, I would recommend the following authors as 

 specially desirable : Kirby and Spence, Introduction to En- 

 tomology ; Duncan's Transformations of Insects ; Packard's 

 Guide to the Study of Insects (American) ; F. Huber's New 

 Observations on the Natural History of Bees ; Bevan on the 

 Honey Bee ; Langstroth on the Honey Bee (American) ; 

 Neighbour on The Apiary. 



I have often been asked to recommend such treatises, and 

 I heartily commend all of the above. The first and fourth 

 are now out of print, but can be had by leaving orders at 

 second-hand book-stores. 



