Pearson—Antiseptic Treatment of Timber. plate viii, 
Photo-Mechl. Dept., Thomason College, Roorkee. 
Degree of penetration of Atlas into the wood of a Boswelha serrata, b 
Finns excelsa, c Picea Monnda , d t'teroccirpns macrocar pus , e Pinus 
longi/olia and f Shorea robusta , after immersion in this antiseptic. 
[To face Plate 74, 
