352 H. M. JOHNSON 



TABLE I 

 Record of Dog 1 



O 0> 



o E fa 



> 



Date S^ •§« lal Remarks 



r»-C 3.3 3 >=; ° 



u u 



'— 



!> "S Z ->-> Z 



Dec. 10 2 . 230 8 4 Refused to work after trial (7) 



" 11 2 230 10 4 Refused to work for three hours. 



" 12 2.230 16 7 



" 13 2.230 16 4 Invariable choice of Rfb. 



" 14 2.230 16 8 Preference for Rfb. 



" 15 2.230 16 6 



"16 2 . 230 10 2 Invariable choice of Rfb. 



" 17 2.230 10 3 Invariable choice of Rfb. Light charge on grills. 



" 18 2.230 10 3 Invariable choice of Rfb. Charge increased. 



" 19 2.230 10 3 Invariable choice of Rfb. Charge increased further. 



" 20 2.230 15 6 Position habit interrupted. 



" 21 2.230 10 4 Preference for Rfb; disturbed by punishment. 



" 22 2.230 10 6 Preference for Rfb; disturbed by punishment. 



"23 2 . 230 10 8 No position preference. 



" 24 2.230 10 9 



" 25 2.230 10 9 



" 26 2.230 10 9 



" 27 2.230 10 10 



" 28 2.230 10 10 



Jan. 7 2.230 10 10 



" 8 2.230 10 10 



" 9 2.230 10 9 



" 10 2.230 10 10 



" 11 2.230 10 10 



" 12 2 230 10 10 Considered ready for stimulus-threshold tests. 



« 13 2.168 10 10 



" 14 2.138 10 8 



" 15 2.138 10 9 . 



" 16 2.138 10 3 Great disturbance at punishment; behavior ambig- 

 uous. 



" 16 2 138 10 9 Made as control test three hours later. 



" 17 2.138 10 8 



" 18 2.138 10 10 



" 19 1.951 10 10 



" 20 1.951 10 8 



" 21 1.951 10 10 



" 22 1.735 10 9 



" 23 1.735 10 10 



" 24 1.561 10 10 



" 25 1.419 10 10 



" 26 1.419 10 10 First appearance of sniffing reaction; see note. 



" 27 1 301 10 10 Sniffing pronounced; see note. 



"28 1.301 10 7 Control-test; method of giving punishment 



changed. 



" 29 1.301 10 4 



" 30 1.561 10 7 



" 31 1.561 10 4 



" 31 2.230 10 5 



Feb. 1 2.230 15 7 



"32 230 10 7 Not worked previous day; box being altered. 



" 4 2.230 10 4 



