276 



Transactions of the Canadian Institute. 



[Vol. VII. 



PLANT. 



Plant 9. 



No. of leaves. 

 Length of stem 



Plant 10. 



No. of leaves . 

 Length of stem 



Plant 11. 



No. of leaves. 

 Length of stem 



Plant 12. 



No. of leaves. 

 Length of stem 



Plant 13. 



No. of leaves. 

 Length of stem 



Plant 14. 



No. of leaves. 

 Length of stem 



219 



8 

 237 



6 

 194 



8 

 219 



8 

 •37 



262 



284 



253 



285 



170 



303 



291 



325 



8 

 269 



322 



8 

 212 



312 



316 



35' 



319 



381 



269 



387 



337 



381 



3^3 



381 



272 



406 



337 



387 



375 



412 



325 



14 

 469 



16 



387 



14 

 500 



431 



462 



365 



•4 

 469 



16 



387 



14 

 500 



43" 



6 



244 



168 



6 

 267 



6 



237 



4 

 462 243 



12 4 

 356 219 



>'2 



< 



206 



214 



Plants 1-8 were each carefully weighed before being placed in the 

 bottles, with a view to ascertain by weight the increase in growth, if any, 

 but it was found during the course of the experiment that it would be 

 impracticable to employ this method to determine growth throughout a 

 series of experiments continued for so long a time as here contemplated, 

 because some of the plants lost many of their leaves. As soon as a leaf 

 dropped it began to absorb of the solution, as detached leaves do, and 

 consequently quantitative determinations of ash increase might lead to 

 error. 



On December 21st plant i had developed an aerial root about 16 

 mm. in length, and on 23rd this had increased in length to 34 mm. On 

 December 21st plant 4 showed three small roots just coming forth from 

 the stem at the second internode, and on 23rd these roots had grown to 

 a length of about 6 mm. On December 25th one of these had grown to 

 a length of 19 mm., but on 28th had withered. The root that developed 

 on No. I was dead on December 31st. 



On December 30th, observations were made as to the general 

 appearance of the plants, and it was found that the leaves of i and 2 

 showed a tendency to curl, and had the appearance of plants grown in 



