No. 85.] 345 



Composition in 100 parts as follows : 



Silica, ;••••• S4.75 



Potassa, with probable traces of soda, combined with the above 



silica 8 . 69 



Phosphate of lime, with traces of oxide of iron (and manga- 

 nese ?) 2.00 



Carbonate of lime, 2 . 00 



Alumma, in traces, 



Phosphate of potassa, . . . 

 Carbonate of potassa . . . 



Sulphate of potassa, | 



Chloride of potassium, .... J 



' and loss, 2.66 



100.00 



7. — Rice Soil from Waverly Island. 



Silica, with fine sand, one- third of which is feldspathec and 

 slightly magnesian or talcose ; and contains alumina with 

 from 2 to 4 per cent, of potassa, mingled with soda and 

 magnesia 47 . 75 



Alumina, partly combined with humic acid 12 . 35 



Peroxide of iron (combined with humus,) with decided traces 



of phosphate of lime, (bone-earth,) 4 . 15 



Carbonate of lime, with traces of magnesia .40 



Water of absorption, 8.50? on qq 



Humus, (organic matter,) 23 .50 ^ 



Chloride of calcium,. , 



Sulphate of lime, .... 



Sulphate of magnesia, , 



Sulphate of potassa, . , 



Chloride of sodium, . , 



and loss, 1 . 35 



100.00 



8. — Rice Soil from Woodville, Main, Waverly. 



Silica, with fine sand, as above 57 .50 



Alumina, partly combined with humic acid 10 .45 



Peroxide of iron (combined with humus,) with decided traces 



of phosphate of lime , 4 . 60 



Carbonate of lime .40 



Carbonate of magnesia . 58 



Water of absorption, 7.50? ok oa 



Humus, .....17.80J "'^•^^ 



Chloride of calcium, . . ) 

 Sulphate of lime, .... f 



Sulphate of magnesia, > and loss, 1 . 17 



Sulphate of potassa, . . ] 

 Chloride of sodium,.. J 



100.00 



