THE CHINCH ]?UG IN MAINE. 51 



hours, at the end of which time only the one short-winged indi- 

 vidual was alive. 



Experiment 15. Eleven long-winged and three short-winged 

 bugs were completely submerged for twenty-five hours. All 

 revived in from twenty to seventy-five minutes. After being 

 dry for eighteen hours they were again submerged for thirty 

 hours, after which none revived in less than an hour and after 

 being dry for eighteen hours three long-winged and two short- 

 winged forms were dead. The remaining nine were then sub- 

 merged for fifty hours after which four loing-winged forms 

 revived within ninety minutes. Three of these were still able 

 to move about at the end of eighteen hours. 



Experiment 16. Four long-winged and four short-winged 

 bugs were submerged for twenty-seven hours. All revived, but 

 at the end of eighteen hours one short-winged individual was 

 dead. At the end of fifty hours longer the remainder were all 

 found to be dead. 



Experiment 17. Six long-winged and ten short- winged bugs 

 were submerged for fifty hours, after which all revived except 

 one of each form. After being dry for eighteen hours, all except 

 one long-winged and two short-winged forms were walking 

 about actively. 



Experiment i8. Twenty long-winged and five short-winged 

 bugs were submerged for seventy-five hours. There were no 

 signs of reviving at the end of three hours, but at the end of 

 twenty hours twelve long-winged and four short-winged forms 

 were moving their legs, one of each form being able to walk 

 about. 



Experiment 19. Thirteen long-winged and two short-winged 

 bugs were kept for seventy-five hours in a tightly corked two- 

 dram vial. At the end of forty-eight hours all were inactive, but 

 all revived within two hours after the end of the test. 



Experiment 20. Eight long- winged and three short-winged 

 bugs were frozen in a dry glass tube for sixteen hours. None 

 revived in less than two hours, but at the end of six hours all 

 but one of each form had revived, but none were able to walk 

 about. 



Experiment 21. Four long-winged and seventeen short- 

 winged bugs were submerged for twenty-six hours after which 

 all but one revived m from one to four hours. 



