236 



Orystallograph y. 



d. Wooden model of Tarfcaric Acid. (Oblique rhombic 



prisms.) Two specimens. 

 Note. For figs., see Phillips' Transl. Pharm., p. 264, figs. 1, 2. 



e. Wooden model of Bicarbonate of Potassium. (Right 



oblique-angled prism.) Two specimens. 



Note. For figs, and remarks upon the resemblance of the crystals to 

 those of the right prismatic system, see Phillips' Transl. Pharm., p. 346, 

 fig. 1, 2. 



/. Wooden model of Acetate of Lead. (Right oblique-angled 



prism.) 



Note. For fig., see Phillips' Transl. Pharm., p. 333. 

 g. Wooden model of Chlorate of Potassium. (Oblique rhom- 

 bic prism.) 

 Note. For fig., see Phillips' Transl. Pharm., p. 354. 



h. Wooden model of Sulphate of Sodium. (Oblique rhombic 



prism.) 



Note. For fig., see Phillips' Transl. Pharm., p. 365. 

 i. Wooden model of Borax. (Oblique rhombic prism.) 

 j. Wooden model of Sulphate of Iron. (Oblique rhombic 



prism). 

 Note. For fig., see Phillips' Transl. Pharm., p. 301. 



Jc. Wooden model of Carbonate of Sodium. (Oblique rhombic 



prisms.) Two specimens. 



Note. For fig., see Phillips' Transl. Pharm., p. 359, and Watts' Diet. 

 Chem., vol. i., p. 794. 



I. Wooden model of Sugar. (Oblique rhombic prism.) 

 Note. For fig., see Watts' Diet. Chem., vol. v., p. 470, fig. 781. 



GG5. VI. DOUBLY OBLIQUE PRISMATIC SYSTEM. (Triclinic t or Anor- 

 tJiic system.) 



a. Glass model showing the following forms. 



Yellow, doubly oblique octahedron. 

 Black lines on glass, doubly oblique prism. 



b. Large crystals of Sulphate of Copper, presented by Mr. 



W. Copney. 



c. Smaller ditto. 



d. Crystals of Sulphocarbolate of Calcium. 



Note. Specimens b, e, and d are all oblique rhombic prisms. Speci- 

 men d consists of remarkably perfect crystals, made by Mr. T. H. Hust- 

 wick. 



e. Wooden model of Sulphate of Copper. 

 Note. For fig., see Phillips' Transl. Pharm., p. 285. 



