THE COMMON CHEMICAL SENSE 109 



NAGEL, W. 1894. Vergleichend physiologische und anatomische Unter- 

 suchungen fiber den Geruchs- und Geschmackssinn und ihre Organe. 

 Bill. Zool., Heft 18. 



PARKER, G. H. 1908a. The Sense of Taste in Fishes. Science, vol. 27, 

 p. 453. 



PARKER, G. H. 1908b. The Sensory Reactions of Amphioxus. Proc. 

 Amer. Acad. Arts. 8ci., vol. 53, pp. 415-455. 



PARKER, G. H. 1912. The Relation of Smell, Taste, and the Common 

 Chemical Sense in Vertebrates. Jour. Acad. Nat. Sci. Philadelphia, 

 vol. 15, pp. 221-234, 



PARKER, G. H. and E. M. STABLER. 1913. On Certain Distinctions be- 

 tween Taste and Smell. Amer. Jour. Physiol., vol. 32, pp. 230-240. 



SHELDON, R. E. 1909. The Reactions of the Dogfish to Chemical Stimuli. 

 Jour. Comp. Neurol. Physchol., vol. 19, pp. 273-311. 



