512 CEMENTS J PAINTS, GLUES, WAXES 



Gum for labels and specimens. 



4. Two parts of gum-arabic, one part of brown sugar ; dissolve in 

 water to the consistency of cream. 



5. Five parts of best glue soaked in 18 to 20 parts of water for a 

 day, and to the liquid add 9 parts of rock candy and 3 parts of gum- 

 arabic. 



6. Good flour and glue, to which add hnseed oil, varnish, and tur- 

 pentine, \ ounce each to the pound. Good when labels are liable to 

 get damp. 



Waxes for Grafting and for Covering Wounds 



Common resin and beeswax waxes. 



1. A standard and reliable wax is as follows : — 



Resin, 4 parts by weight. 



Beeswax, 2 parts by weight. 



Tallow (rendered), 1 part by weight. 

 Melt all the ingredients together, exercising care to avoid boiling. 

 Pour the hot liquid quickly into a pail of cold water. With greased 

 hands flatten the spongy mass beneath the water so that it cools uni- 

 formly. Permit it to get cold and tough, but not brittle. Remove 

 from the water and pull until ductile and fine in grain. Lumps in 

 wax are common, and are due to improper handling. If too lumpy, 

 remelt and pull again. Make into balls or small skeins and put away 

 in a cool place. When wanted soften with heat of hand or in hot 

 water. It can be kept for years. One of the best waxes, either for 

 indoor or outdoor use. 



For general purposes the above formula gives a wax of the proper 

 consistency. The ingredients may be varied, however, for special pur- 

 poses. If a softer wax is desired, more tallow in proportion should 

 be added. The addition of more beeswax makes the wax tougher. 

 By thus changing the amount of the different ingredients a wax for 

 almost any purpose can be secured. 



2. The following wax, which is slightly softer, may be applied more 

 conveniently in cold weather : — 



Resin, 4 parts by weight. 

 Beeswax, 2 parts by weight. 

 Linseed oil, 1 pint. 



