BIBLIOGRAPHY VII 321 



20. LAPWORTH CH. and WATTS. 1894. Proceedings of the Geologists' 



Association, Vol. XIII. 



21. PEACH, BENJAMIN N., and HORNE, J. 1899. The Silurian Rocks 



of Great Britain. Memoirs of the Geological Survey of the United 

 Kingdom. Vol. I, Scotland. 



22. QUENEAU, A. L. 1902. Size of grain in igneous rocks in relation to the 



distance from the cooling wall. Coltimbia School of Mines Quarterly, 

 Vol. XXIII, pp. 181-195, 6 plates. 



23. RANSOME, F. LESLEY. 1893. The Eruptive Rocks of Point Bonita. 



Bulletin of the Department of Geology of the University of California. 

 Vol. I, pp. 71-114, plates 6 and 7. 



