cJOURN. RMICR. SOG.VOL m, PL. 1 



FiA. e. 



Fi^ 7 



Fi^. 10. 



" 3000 y' 



WHrwllm^er drt'- ninot 



Illusiraix.n.<^ M^ BaJKn^er's pohper orv th^ 



Tliermal DesLth Point of kn.owii 



Mona-d- Germs . 



