326 MATERIAL. [APR II 



Special apparatus. 



Lunge's Nitrometer. 

 Soxhlet's Fat-extraction apparatus 1 . 

 Arrangement for continuous agitation. 

 Material required. 



Seeds of Cress (Lepidium sativum). 

 Sainfoin (Onobrychis sativa). 

 ,, Hemp (Cannabis sativa). 

 Young and ripe fruits of Apple. 



Banana (Musa sapientum). 



Bark of Willow (Salioc viminalis). 

 Leaves of Pea (Pisum sativum}. 

 Barley (Hordeum). 

 Clover (Trifolium), 

 Tropaeolum. 



Beetroot or Mangold- wurzel (Beta). 

 Sycamore (Acer pseudoplatanus). 

 (Old and young) of Sempervivum tectorum. 

 ,, Rhubarb (Rheum). 



,, (of normal) Potato. 

 ,, (of etiolated) Potato. 

 Roots of Beetroot or Mangold-wurzel. 

 Grains of Barley. 

 ,, Maize. 

 Wheat. 



Bitter almonds. 

 Fresh Malt. 

 Yeast. 

 Spirogyra. 

 ,, Shoots of Elodea canadensis, or Sparganium natans. 



1 Schleiclier arid Schiill have recently introduced paper shells for use 

 with Soxhlet's apparatus in place of the inner tube, which are very 

 satisfactory. 



