ADDITIONAL COMMENTS ON THE GEOLOGY OF IHE JUAN FERNANDEZ ISLANDS 87 



24. A. JoHANNSEN. Petrography, 111, j). 334. 



25. E. DE Margerie. La face de la 'Jerre. Ill, ]). 1359. 



26. Bailey Willis and H. S. Washington. San Felix and San Ambrosio, their geo- 



logy and petrography. Bull. Geol. Soc. of America. Vol. 35, 1924, p. 365. 



27. L. Chubb and C. Richardson. Geology of Galaprgos, Cocos and Kaster Islands. 



Bernice P. Bishop Museum, Honolulu. Bull. 100, 1933, p. 43, 47, 64. 



28. C. BuRRi. Chemismus und provinciale Verhiiltnisse der jungeruptiven (iesteine 



des pacifischen Oceans und scine.'r I'mrandung. Schw. Min.-petrogr. Mitt. 

 Band 6, 1926, p. 177. 



Unfortunately an interesting paper by Gorden A. Macdonald on the 'Hawaiian 

 Petrographic Province', published in the Bull. (ieol. Soc. of America (60:2, 1949, 

 p. 1588), in which comparisons with Juan Fernandez and other Central Pacific Islands 

 are discussed, has evaded my attention until this paj)er was already in print. 



