GROUPS OF PLANTS. 



79 



ing; Red cedar (Juiiipcrus virgiiiiaiia) (Fig. 52) used in the 

 making of cigar boxes and lead pencils; balsam fir {Abies bal- 

 samca) tised in the manufacture of wood pulp. 



Fig. si. Cones of some of the Conifers. A, branch of spruce pine {Pinus echinaia) 

 with 2 cones; B, from pitch pine (Picea excelsa); C, from great sugar pine (Pinus Laniber- 

 tiana); D, from black spruce {Picea Mariana); E, from the California silver fir (Abies 

 magnified); F, from loblolly or frankincense pine {Pinus TcBda)\ G, branch of pitch or 

 torch pine {Pinus rigidd). 



