APPENDIX. 



47 



central mass which projects about 4 feet above the plane upon which the roots are 

 outspread, and the top of which has a transverse mean diameter of 4 feet 4 inches, 

 equal to a circumference of 13 feet. The specimen confirms the statement made 

 in a previous part of this memoir (see page 16) that these Stigmarian roots 

 normally dichotomised but twice. The following xylograph is a diagrammatic 

 representation in which I have placed the four roots, A, B, C, and D, with their 

 respective branches, side by side, for the purpose of showing accurately their 

 relative lengths and the varying positions of their several dichotomies. Their 

 several diameters are not represented. 



The following table gives the length of each division of the several roots 

 between these dichotomies. 1 



Length of each of the four undivided roots from the edge of the transverse 

 section of the stem to the first dichotomisation. 



A. 1 foot 4 inches C. 1 foot 8 inches 



B. 1 „ 4 „ D. 1 „ 5 „ 



1 The Eoman numerals attached to each of the XVI terminal branches of these roots are also 

 attached to the same branches on Plate XV. 



