TO ALL 



WHO LOVE NATURE, 



AND IN PARTICULAR TO THE 



MEMBERS OF THE 



HULL SCIEXTIITC AND FIELD NATURALISTS* CLUB 



AND KINDRED SOCIETIES, 



BUT FOR WHOSE KINDLY CO-OPERATION AND 



FREQUENT GENIAL COMPANIONSHIP 



IN THE FIELD THIS WORK 



WOULD NOT HAVE BEEN 



UNDERTAKEN. 



