Blowpipe Outfit. 47 
Fifth. Open and Closed Tubes.—These should be 
made from Bohemian glass tubing of about one-fourth 
of an inch diameter, cut into four-inch lengths. To 
make the closed tubes simply fuse one end shut with the 
blowpipe, using the hotter portion of the flame, which 
is just beyond the point of the inner blue flame. 
Sixth. Plaster and Bone-ash.—When these are dif- 
ficult to obtain any pure clay well burned and powdered 
will form a good substitute. 
Seventh. A pair of platinum-tiped forceps for mak- 
ing the flame tests and aeeee the fusibility of min- 
erals.: 
HKighth. Two or three Bohemian watch glasses to 
be used for making the acid tests of the finely powdered 
mineral, and Ninth. Several lumps of charcoal. This 
should be well burnt, and fine grained; that of the 
smaller limbs is generally the best. 
Besides the above a‘number of glass-stoppered bot- 
tles containing the following named reagents should be 
added: 
LIST OF CHEMICALS AND REAGENTS. 
1. Soda bicarbonate. 
2 Powdered Borax Glass. 
3. Salt of Phosphorus, SPh. 
4. Bismuth-Flux—(2 parts sulphur, 1 part potas- 
sic-iodide and 1 part potassic-bisulphate. ) 
5. Boracic-acid. 
6. Boracic-acid flux—(Potassium sulphate, K:S0,, 
41% parts and Calcium bifluoride CaF», 1 part.) 
7. Copper oxide, CuO. 
8. Potassium-sulphate K2SO.. 
9. Ammonium-sulphide (NH:):S. 
10. Magnesium (metallic). 
11. Test Copper (metallic). 
