OBSERVATIONS 



ON 



SOME INTERESTING PHENOMENA 



IN 



ANIMAL PHYSIOLOGY, 



EXHIBITED BY SEVERAL SPECIES 

 OF 



PLANARI^. 



ILLUSTRATED BY COLOURED FIGURES 



OP 



LIVING ANIMALS. 



BY 



JOHN GRAHAM DALYELL, Esq. 



EDINBURGH: 



PRINTED BY ANDREW BALFOUR, 



FOR ARCHIBALD CONSTABLE & CO. EDINBURGH ; 



AND LONGMAN, HURST, REES, ORME AND 



BROWN, LONDON, 



1814. 



