REFERENCES 



can be tested for any type of capillary electrode by having a tube of agar 

 at a known pH with a layer of fluid of a different pH above it. The electrode 

 is lowered into the tube so that the uninsulated tip is just buried in the agar 

 while the insulated part is in the fluid which is added when the tip is well 

 imbedded. The reading of pH should correspond to that of the agar only 

 if the insulation is complete. As the electrode is withdrawn the reading 

 should change immediately to the value for the fluid. 



REFERENCES 



^ Butler, J. A, V. Electrocapillarity London; Methuen. 1940 



2 KoRTUM, G. and Bockris, J. O'M. Textbook of Electrochemistry Amsterdam; 

 Elsevier. 1951 



3 Harris, G. W. Phil. Trans. Roy. Soc. Ill B (1947) 385 



* Bradley, P. B. and Elkes, J. EEG. Clin. Neurophysiol. 5 (1953) 451 



s Marshall W. H. Stain Tech. 15 (1940) 133 



« Adrian, E. D. and Moruzzi, G. /. Physiol. 97 (1939) 153 



' Bishop, P. O. and Collier, R. /. Physiol. 112 (1951) 8P 



^ Grundfest, H., Sengstaken, R. W., Oettinger, W. H. and Gurry, R. W, Rev. 

 Sci. Instrum. 21 (1950) 360 



» Hubel, D. H. Science 125 (1957) 549 



i*' Davies, p. W. and Brink, F. Rev. Sci. Instrum. 528 (1942) 13 

 1^ Cater, D. B., Phillips, A. F. and Silver, I. A. Proc. Roy. Soc. B 146 (1957) 

 289 



12 Cater, D. B., Phillips, A. F. and Silver, I. A. /. Physiol. 129 (1955) 33P 



13 Petering, H. G. and Daniels, F. J. J. Amer. chem. Soc. 60 (1938) 2796 



14 Caldwell, P. G. /. Physiol. 126 (1954) 169 



1^ Dole, M. The Glass Electrode New York; Wiley. 1941 



i« Voegtlin, G., Kahler, H. and Fitch, R. H. Nat. Inst. Hlth. Bull. 164 (1935) 



15 

 1' Sonnenschein, R. R., Walker, R. M. and Stein, S. N. Rev. Sci. Instrum. 



24 (1953) 702 



39 



581 



