350 St opes. — A New A raucarioxylon from New Zealand . 
Seward, A. C., and Ford, S. O. (’06) : The Araucarieae, Recent and Extinct. Phil. Trans. Roy. 
Soc., Lond., B., vol. cxcviii, pp. 305-41 1, Pis. XXIII-XXIV. 
Thomson, R. B. (’13) : On the Comparative Anatomy and Affinities of the Araucarineae. Phil. 
Trans. Roy. Soc., vol. cciv, pp. 1-50, Pis. I-VII. 
EXPLANATION OF PLATE XX. 
Illustrating Dr. Marie Stopes’s paper on a new Araucarioxylon from New Zealand. 
All figures illustrating Araucarioxylon novae zeelandii , sp. nov. Photos 1, 3, and 4 taken by 
Mr. Herring, and 2, 5, 6, 7, and 8 by Mr. Pittock. 
1. Part of the area of the petrifaction, showing the whole central core of silicified wood (this 
shows up darker than the rest, its broken outline marked at s) surrounded by less well preserved zones 
in carbonate, the outer regions at c showing again the annual rings and the wood tissue fairly well 
preserved. ( x slightly over 2 diam.l 
2. Small part of transverse section, rt , resin-containing tracheides bordering annual rings. 
3. Transverse section showing clearly the alternation of spring and autumn wood ; the spring 
wood slightly crushed, through which the resin-containing tracheides bordering the medullary rays 
stand out very clearly. 
4. Part of Photo 3 highly magnified, aa, limit of annual ring. The contrast between the thin- 
walled summer wood and the thicker-walled, resin-containing tracheides running on either side of three 
rays shows up very clearly at x. 
5. Radial longitudinal section of the wood showing the masses of the ‘resin-spools’. 
6. Portion of a similar section, showing also the pitting of the ray cells along ray marked mr. 
7. Tangential section of wood, showing the rays with the wing-like masses of resin adjacent to 
each. 
8. High power view of radial section, showing two medullary rays largely obscured by the 
quantities of ‘ resin-spools ’. Below mr the pitting of the ray cells can be seen. 
