Report U. S. F. C. 1»>81.— Tanner. Fish Hawk. 



PLATE XVII, 



L.CASELLA 



INST.MAKCRTOTHEADMIRflLTr 



LONDON. 



V- ^^^ 



.^^>^ 



The Millor-Casella deep-sea tlierniomoter in and out of case. 



