324 JOURNAL OI'' l^ORKSTRY 



Table 8. — Number of Seed per Pound 

 Northern California Seed 



Average No. 

 Species seed per pound Max. No. Min. No. No. tests 



Yellow pine 10,000 13,300 6,900 19 



Jeffrey pine 4.040 5,400 3,650 12 



Sugar pine 2,170 3,200 1,640 38 



Douglas fir 



White fir 16,230 25,000 12,000 



Red fir 6,550 11,000 4,100 17 



Incense cedar 15,500 • 29,000 6,400 55 



Bigtree 80,000 100,000 62,000 16 



Table 9. — Number of Seed per Pound 

 Southern California Seed 



Average No. 

 Species seed per pound Max. No. Min. No. No. tests 



Yellow pine 9,750 12,360 5,ioo 13 



Jeffrey pine 4,000 4,670 3,i8o 23 



Sugar pine 2,200 2,360 1,900 4 



Douglas fir 



White fir None 



Red fir None 



Incense cedar Only a few tests. 



RIXATION or" CUTTING, GRF.ENHOUSK AND NURSERY TESTS 



The work so far done shows that for some species the cutting test 

 gives an excellent index of the germinating power of the seed, while 

 for others it is nearly worthless. It is important to establish relation- 

 ships between cutting test and germination, so that untested seed can 

 be sown intelligently. The following tables summarize the data for the 

 various species ; individual tests are not listed : 



Table 10. — Western Yellow Pine — Results of Pour Years' Tests 

 Northern California vSeed (Sierra National Forest North) 



G. N. 



G., N., 



Seed per lb. C. T. 120 days 120 days C. T. C. T. No. 



(per ct.) (per ct.) (per ct.) (per ct.) (perct.) 



Average . 10,100 84 67 64 80 75 19 



Maximum 13,300 94 83 78 102 loi i 



Minimum 6,900 74 58 50 65 65 I 



The maximum and minimum are for the individual tests showing 

 the highest and lowest values. 



The relations between germination in the greenhouse and the 

 (Feather River) nursery to cutting-test values are remarkably con- 

 sistent for all lots and for all years. The first-year greenhouse tests 

 averaged but 75 per cent of cutting test, no doubt because- they ran only 

 100 days. The corresponding nursery tests exceeded the greenhouse 

 tests slightly and were 76 per cent of cutting test or just normal. 



