218 TUMOURS OF EUCALYPT8 AND ANGOPHORAS. 



the lateral roots being insignificant by comparison. The seed- 

 ling-stem has been able to increase its initial lead, and to develop 

 its upper branches, so that their crown of foliage fairly completely 

 overshadows the tumour-shoots, preparatory- to getting rid of 

 them by the process of natural pruning. The lateral roots are 

 so insignificant that the tumour must be largely dependent on 

 the seedling-stem for most of its water. When the leaves of the 

 crown of foliage belonging to the seedling-stem and its branches 

 have overshadowed the tumour-shoots, and are transpiring freely, 

 the latter seem to suff'er in consequence. When the shoots have 

 been got rid of, the tumour, as such, gradually comes to a stand- 

 still. The tumour of this example is shown in PI. xvii. (nat. size). 

 and is a fine specimen. 



Fig. 2 of PL xvi., shows the size of two, more advanced seed- 

 lings, 6-7 feet high, side by side. The one on the left, which had 

 got rid of its tumour-shoots, was dug up (inadvertently the tap- 

 root was cut off" rather too short), and held beside a slightly 

 taller, undisturbed specimen, which had one shoot left. This 

 was afterwards uprooted and examined. It will be noticed that, 

 at this stage, the tumour is completely out of sight underground. 

 These photos were taken early in October, 1914, at which time 

 the plants were about six years old. Three and a half years 

 later, other examples of the same batch as those in fig. 2, were 

 promising saplings 9-12 feet high. 



The last stage of an advanced seedling of E. tereticorids is 

 shown in fig. 2 of PI. xxi.; this has one small shoot left. The plant 

 was uprooted carefully, placed on a stump, and photographed 

 immediately. It was growing near the specimens shown in PI 

 xvi. In this case, the seedling-stem appears to be excentric, 

 consequent upon lopsided growth of the tumour: and the shoots 

 were all on one side. One nodule was not incorporated in the 

 tumour. The difi'erence in size between the taproot and the 

 incorporated or other lateral roots is well shown. 



PI. XX., shows another but older stage of the same species; but, 

 in this case, matters are complicated by the death of the seedling- 

 stem. A few inches of the latter were in situ when the plant 

 was found, but were accidentally broken ofi" in packing-up a 



