1. On the mechanism of the eye;Young;Phil Trans R Soc Lond,1801
2. The Croonian lecture on muscular motion;Home;Phil Trans R Soc Lond,1795
3. The description of an organ by which the eyes of birds are accommodated to the different distances of objects;Crampton;Thompson's Annals of Philosophy,1813
4. Ueber den accommodations-apparat im auge der vogel, besonders der falken;Müller;Archiv für Ophthalmologie,1857