372 OBSERVATIONS 



candle. Their antennee are remarkably long, slen- 

 der, and flexile. 



October, 17CO. After the servants are gone to 

 bed, the kitchen hearth swarms with young crickets, 

 and young blattce molendinarice of all sizes, from the 

 most. minute growth to their full proportions. They 

 seem to live in a friendly manner together, and not 

 to prey the one on the other. 



August, 1792. After the destruction of many 

 thousands of blattce molendinaria, we find that at 

 intervals a fresh detachment of old ones arrives, and 

 particularly during this hot season ; for the windows 

 being left open in the evenings, the males come 

 flying in at the casements from the neighbouring 

 houses, which swarm with them. How the females, 

 that seem to have no perfect wings that they can 

 use, can contrive to get from house to house, does 

 not so readily appear. These, like many insects, 

 when they find their present abodes overstocked, have 

 powers of migrating to fresh quarters. Since the 

 blatttf have been so much kept under, the crickets 

 have greatly increased in number. WHITE. 



GRYLLUS DOMESTICUS (HOUSE CRICKET). No- 

 vember. After the servants are gone to bed, the 

 kitchen hearth swarms with minute crickets, not so 

 large as fleas, which must have been lately hatched. 

 So that these domestic insects, cherished by the 

 influence of a constant large fire, regard not the 

 season of the year, but produce their young at a 

 time when their congeners are either dead, or laid 

 up for the winter, to pass away the uncomfortable 

 months in the profoundest slumbers, and a state of 

 torpidity. 



When house -crickets are out and running about in 

 room in the night, if surprised by a candle, they 



