Isometric System. Three equal axes crossing at 

 right angles (ex. cube). 



Tetragonal System. Two axes equal, third unequal, 

 all crossing at right angles (ex., square prism). 



Orthorhombic System. Three unequal axes, but in- 

 tersections all at right angles (ex., rectangular prism). 



Monoclinic System. Three unequal axes, one inter- 

 section oblique (ex , oblique rectangular prism). 



Tridinic System. Unequal axes, all crossing 

 obliquely (ex., oblique rhomboidal prism). 



Hexagonal System. Three equal axes lying in 

 one plane and intersecting at angles of 60, and a 

 fourth axis crossing each of the others at right 

 angles, and longer or shorter (ex., hexagonal 

 prism). 



By the truncation and bevelment of the angles 

 and edges of these fundamental forms a vast variety 

 of secondary forms are produced. 



How is commercial bicarbonate of soda purified? 

 By washing with water until the washings give no 

 precipitate with sulphate of magnesium. 



What bromide contains the most bromine? Bro- 

 mide of Lithium. 



What is a test for ammonia salts? Heated with 

 alkalies they evolve NH 3 . 



From what is gallic acid obtained? Nutgalls. 



From what is Oleic Acid obtained? By-product 

 in the manufacture of candles and glycerin. 



How is Glycerin obtained? Obtained from fats 

 and fixed oils as a by-product in the manufacture of 

 soap. 



What are confections? Semi-solid saccharrine 

 preparations. 



What is a glucoside? A substance which is con- 

 verted into glucose by boiling with acids. 



From what is Tannic Acid obtained? Nutgalls. 



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