104 A. M. Mayer—Researches in Acoustics. 
‘as a sug- 
gestion, and with the hope that I may thereby call the atten- 
tion of students of physiological acoustics to the consideration 
of the uses of these peculiar forms. Recent studies in embry- 
ology and comparative anatomy have shown that the ductus 
Nerve and Cochlea ; in Stricker’s Histolo -) The fact that the 
ductus controls the form of the scalze, and not vice versa, shows 
traverses the scale. 
All know that the organ of Corti is enclosed in the ductus 
cochlearis, a canal of triangular section bounded on two of its 
sides by the scalz, and on its third by the membranes lining 
the outer wall of the cochlea. The upper wall of this canal is 
. 
