55 GEOLOGY 



'553^1 Ries, H. Clays their occurrence, properties and uses. 



New York 1906. 



55362 Boswell, P. G. H. British sands and rocks used in 

 glass-making. Lond. 1918. 



'5 5 3^ Church, A. H. Precious stones. Lond. 1905, 



'5538 Goodchild, W. Precious stones. Lond. 1908. 



'5538 Streeter, E. W. Precious stones and gems. 



Lond. 1898, 



'5538 Wodiska, J. Book of precious stones. New York 1909. 



'5538 Smith, J. Semi -precious stones of Carrick. 



(4142) Kilwinning [1910], 



