437 



Figures 291-2. This disposition of cells is not shown by C. E. Bertrand, Lc. 

 Only one bundle abnormally orientated was found, and that a median one corres- 

 ponding to a midrib, the phloem vessels being separated, as seen in section, by 

 triangular masses of medullary rays (apex inwards) into triangular masses with 

 the apex outwards. Figure 287, these two forming the outer edge of the fan-shaped 

 bundle which is here backed by a number of coUenchyma cells, three or four rows 

 wide, and both these and the protoxylem cells are bounded above and below by 

 parenchymatous cells, in which also occur very small oil cavities surrounded by a 

 single row of cells. One or two sclerenchymatous cells were found in this tissue. 

 On each side of the median bundle and scattered in the spongy tissue are small 

 reticulated or spiral cells, the transfusion tissue as described by C. E. Bertrand, 

 I.e., under P. elongata of South Africa, and shown in Figure 287. 



The twisting of the petiole of the leaf is evidently due then to the presence 

 of the stomata on the underside ; the torsion being also due to the leaf protecting 

 its transpiratory surface from the sun's rays or other atmospheric adverse con- 

 ditions, or per contra in a position favourable to its physiological requirements. 



IV. TIMBER. 



(«) Economic. 



This is one of the largest trees of the coast district guUies. It has a 

 straight grain, and is inchned to turn slightly brown on exposure. It is one of 

 the finest of our all-too-few soft timbers, and is very useful for all such economics 

 as pertain to these, such as joinery, carpentry, &c., and is also useful for carving. 



It has a reputation for white-ant-and teredo-resisting properties; piles of 

 this timber with the bark on are said to be lasting. 



Mr. Jasper Morgan of New Italy, writing on the "Brown Pine," states: — 

 " This species is, unfortunately, almost extinct, the only specimens being saphngs 

 of very httle value. It grew in profusion about the Wilhams River long ago, 

 and was used for ship decking, &c." 



Transverse Tests of Timber — Podocarptis data. 

 (Standard size, 38 in. x 3 in. x 3 in.) 



Size of specimen in inches 

 Area of cross section, square inches ... 

 Breaking load, lb. per square inch 

 Modulus of rupture in lb. per square inch 



,, elasticity ,, ' ,, 



Rate of load in lb. per minute 



No. I. 



No. 2. 



No. 3. 



63-00; D3-00 

 9-00 



4>254 



8,508 



1,053,658 



425 



B 3-00; D 2-97 

 8-91 



3,390 



6,917 



1,403,508 



565 



B 2-98; D 292 



870 



4,450 



9,475 

 1,366,875 



635 



