ANALYSES OF THE GRASSES. 79 



2. Second specimen. Teken from a swamp three miles south of Albany : plant in flower. 

 Ash of a reddish tint, and slightly effervescent. 100 grs. gave as follows : 



Per centum. 



Silicic acid 35-250 



Phosphates 19-350 



Lime 0-055 



Magnesia - 0-025 



Potash 9-130 



Soda - 19-840 



Sodium 1-605 



Chlorine 2-445 



Sulphuric acid 8-910 



Organic acid ...... 2-450 



Carhonic acid not determined. 



98-060 



VIII. BULRUSH (Juncus effuius). 



Gathered in a swamp three miles south of Albany : cut June 22; height 40-43 inches, 

 just out of flower. One stalk weighed 46 grs. 



Per centum. 



Water 46-586 



Dry matter 53414 



Ash 0-978 



Ash calculated dry 1-831 



Organic matter calculated dry ... 98-169 S. 



Ash saline. The proportion of inorganic matter in this plant is very small. 



IX. SLENDER CLUBRUSH {Scirpus tenuis). 

 Gathered in a swamp three miles south of Al'iany : cut June 22, in flower. 



Per centum. 



Water 38-241 



Dry matter 61-759 



Ash 2-663 



Ash calculated dry 4-312 



Organic matter calculated dry ... 95-688 S. 



Ash saline. 



