1916 



Karrer; on Nereocystis 



288 



J. Karrer, Del. PLATE 41 



All drawings, X220. 

 Fig, 1. Crystals of sodium-uranyl acetate. 

 Fig. 2. Crystals of sodium-uranyl acetate within the cell. 

 Fig, 3. Precipitate of potassium-cobalt nitrite in lower stipe. 

 Fig, 4, Crystals of potassium chloroplatinate. 

 Fig, 5, Crystals of potassium chloroplatinate within the cell. 

 Fig, 6. Crystals of magnesium-ammonium phosphate in the stipe. 

 Fig. 7. Crystals of silver nitrate in the stipe. 

 Fig, 8, Crystals of calcium sulphate in the fronds. 

 Fig, 9, Crystals of calcium sulphate in the holdfast. 

 Fig, 10, Crystals of calcium sulphate in the stipe. 



