344 S topes, — A New Araucarioxylon from New Zealand . 
6 rays were i cell high, 
20 
55 
>> 
2 
cells 
5} 
42 
>> 
3 
>> 
)f 
43 
)> 
4 
5) 
J) 
15 
5> 
5 
5J 
)) 
6 
6 
)> 
}) 
1 
}) 
7 
>5 
,, and none were higher than seven. 
cells 
of the 
ray 
are 
all alike, and undifferentiated into various 
types of elements (see Text-fig. 2 and Photos 5, 6 and 8). In radial 
sections the ray pitting can clearly be seen, at mr, Text-fig. 2, and in 
Tn/V 
Text-fig. 2. Radial section of wood showing * resin spools’, rs ; the pitting on the tracheides t , 
and the pitting on the ray-cells mr. 
Photo 6 in several cells along the ray mr, also in Photo 8 on a larger scale 
of magnification. These pits are in groups of five or six, and are bordered. 
The slit is very noticeable in some cells, and is placed obliquely, which is 
the case in all living Araucarians, according to Thomson (T 3 ). 
Resin-containing tracheides. In both radial and tangential sections the 
most noticeable feature is the extensive ‘ resin ’ deposit in the elements 
neighbouring the medullary rays (see Photos 5, 6, 7 and 8, and Text-figs. 
2 and 3). In transverse sections the radial series of tracheides running on 
either side of the medullary ray are generally differentiated from the others 
more or less noticeably, both by the thickening of their walls and by the 
filling up of their lumina by resin-like, thick contents. These can be seen 
at rt in Photo 2, and more clearly in Photos 3 and 4. Owing to the opaque 
nature of the fossil, even Photo 4, clearly as these cells show in it, does not 
convey quite the same noticeable contrast between these cells and the other 
