OF ARTS AND SCIENCES. 57 



VI. 



The solution contained hydro-disodic phosphate. 



(1) gave Na 4 P 2 7 from 40 cm. 8 0.4112 gr. 



(2) „ „ „ „ 0.4113 gr. 



Every 40 cm. 8 contained, therefore, 0.2195 gr. PjOg. 



VII. 



The solution contained h}dro-disodic phosphate. 



(1) gave Na 4 P 2 O r from 40 cm. 8 0.3429 gr. 



(2) „ „ „ „ 0.3429 gr. 



Every 40 cm. 8 contained, therefore, 0.1831 gr. P 2 6 . 



VIII. 



The solution contained microcosmic salt. 



(1) gave NaP0 3 from 40 cm. 8 0.3077 gr. 



(2) „ „ „ „ 0.3078 gr. 



Every 40 cm. 3 , therefore, contained 0.2142 P 2 6 . 



IX. 



The solution contained microcosmic salt. 



(1 ) gave NaP0 8 from 40 cm. 8 0.2897 gr. 



(2) „ „ „ „ 0.2900 gr. 



Every 40 cm. 8 contained, therefore, 0.2017 gr. P 2 5 . 



X. 



The solution contained hydro-disodic phosphate. 



(1) gave Na 4 P 2 7 from 20 cm. 8 0.0247 gr. 



(2) ,, » „ „ 0.0249 gr. 



Every 40 cm. 3 contained, therefore, 0.0265 gr. P 2 0.. 



XL 



The solution contained hydro-disodic phosphate. 



(1) gave Na 4 P 2 7 from 20 cm. 8 0.0249 gr. 



(2) „ „ „ „ 0.0250 gr. 



Every 40 cm. 8 contained, therefore, 0.0266 gr. P 2 6 . 



