. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Fig. 122. Dark-bodied Shearwater (Puffinus grisetis) Fig. 123. Pigeon Guillemot (Cepphus columba) Appearances of the Fundus Oculi in the Preserved Eyes of Birds. THE FUNDUS APPEARANCES IN VARIOUS ORDERS OF BIRDS 75 ColymbiformesPacific Loon. Gavia pacifica. Thewriter has never been able to examine morethan one individual of this species, or anyother Diver. He was obliged to use theophthalmoscope, with little protection fromthe blazing sun of a Califor
. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Fig. 122. Dark-bodied Shearwater (Puffinus grisetis) Fig. 123. Pigeon Guillemot (Cepphus columba) Appearances of the Fundus Oculi in the Preserved Eyes of Birds. THE FUNDUS APPEARANCES IN VARIOUS ORDERS OF BIRDS 75 ColymbiformesPacific Loon. Gavia pacifica. Thewriter has never been able to examine morethan one individual of this species, or anyother Diver. He was obliged to use theophthalmoscope, with little protection fromthe blazing sun of a Californian noon-day,upon a recently dead bird. The examinationwas necessarily incomplete. The fundus waslight gray, dotted over with dark pigmentgranules; the pecten was large and therewas a well-marked porus opticus. Sphenisciformes Black-footed (Cape) Penguin. Sphen-iscus demersus. The eyeground of thisspecies is depicted as Plate XIV, on page 133of this monograph. The dominant color of the fundus is brightred shading to crimson. It is generallystippled with minute, dark-red and orangedots, much like grains of sand. About adisc-length from the upper end of the opticdisc these dot
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1917
