1914] 



DA RSI E, ELLIOTT &• P EI RC E—GERM I X AT I NG POWER 



"5 



with the temperature of the room. On opening the flasks a corre- 

 sponding difference was revealed in the condition of the two sets of 

 seeds. The 191 1 lot had germinated very freely, and showed rather 

 remarkable growth. Many radicles were 3-4 cm. long, and the 

 cotyledons had emerged in nearly all the seedlings. On the other 

 hand, only three of the 1907 seeds had germinated, less than 1 per 

 cent. There was no mold in the 191 1 seed, whereas the older seed 



TABLE VII 



Date 



May 



Time 



I. 



• * 



4: 



2. 



• « 



2: 



3- 



• * 



9: 



3- 



• * 



5: 



4. 



• t 



8: 



4- 



• t 



5- 



5- 



• * 



9: 



5- 



• * 



4: 



6. 



• * 



9: 



6. 



• • 



3: 



7- 



• • 



8: 



7 



m • 



4: 



9 



• + 



10: 



10. 



• • 



9: 



11. 



• * 



9- - 



13 



• » 



12: 



14. 



• 



9: 



'4- 



• ■ 



3: 



15- 



• • 



8: 



16. 



» • 



8: 



16. 



• • 



4: 



17. 



• • 



9: 



17 



• 



3: 



18. 



* ► 



9: 



20. 



• + 



5: 



22. 



• t 



9: 



OO P.M. 

 30 P.M. 

 30 A.M. 

 30 P.M. 

 OO A.M. 

 30 P.M. 

 30 A.M. 

 30 P.M. 

 30 A.M. 

 30 P.M. 

 30 A.M. 

 30 P.M. 

 OO A.M. 

 30 A.M. 

 30 A.M. 

 OO M. 

 30 A.M. 

 30 P.M. 

 30 A .M. 

 OO A.M. 

 OO P.M. 

 30 A.M. 

 30 P.M . 

 30 A.M. 

 30 P.M. 

 30 A .M. 







Hours 

 elapsed 



ft • 4 * 



21-5 



40.5 



48. 5 

 63.0 



72.5 

 88.5 



95-5 

 112. 5 



118. s 



135-5 



143 -5 

 181. o 



204.5 

 228.5 



21.5 



27-5 



44 5 

 68.0 



76.0 



93-5 



99 5 



"7-5 

 173.0 



214.0 



Room 



1907 



l8°0 C. 



17-5 



17-5 

 17.6 



17.6 



17.6 



17.7 

 17.8 



18.2 



17.8 



18.0 



18.0 



18.0 



18.0 



18.0 



18.0 



18.0 



18.0 



18.0 



18.2 



18.0 



18.0 



18.0 



18.0 



18.0 



IOII 



1908 



iq?8o C. 



17.60 



16.70 



16.75 

 16.80 



16.80 



16.85 



16.90 



17.15 

 17.30 



17.20 

 17.20 

 17.20 



16.75 



17.30 



2o?55 C 



i8-35 



17.35 

 17.40 



1775 

 18.10 



18.90 



19.40 



20.60 



20.90 



21.50 



21.70 



22.70 



21 .90 



21.40 



1 . 



I 



IQIO 



27?8o C. 28?oo C* 



20.80 



21.70 

 18 . 60 

 17.90 

 17.90 

 18.00 

 18. 10 

 18.10 

 18.40 

 19.80 

 20.20 



17.90 



17.80 

 18.00 



19. 10 

 19.80 

 22 .00 

 21 . 10 



20.00 



IK* * {."i^ 11 *^ up l !" s experiment, it was necessary to prepare a fresh supply of boiled distilled water. 

 l his did not have time to cool to room temperature, and hence the high initial temperatures and the 

 immediate drop to room temperature. 



had molded considerably. As table VII shows, the records of the 

 1910 and 1908 seeds are intermediate between those of the 191 1 and 

 1907 seeds. About 95 per cent of the 1910 seeds germinated, but 



['he seedlings 



of the 1908 seed not over 40 per cent germinated. 

 of both of these latter sets were vigorous, as is shown by fig. 7. We 

 believe that the high initial temperature to which the seeds of these 

 two latter sets were exposed stimulated respiration in both lot-, and 



