Page, 



JRILL; HARVEY C. Datura alba.... 257 



GANA, VICENTE Q. Some Philippine tanbafks.. 261 



WELLS, ALBERT H. Possibilities of gulaman dagat as a sub- 

 stitute, for gelatin in food 267 



WITT, J. C. The effect of sulphides on cement 273 



BEHRMAN, A. Sr Note on the Blacher method for the deter- 

 mination of hardness in water 291 



Reviews . 295 



Index , 297 



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