^04 



The timber, however, is seen to best advantage along with other and 

 quieter-looking woods, for when used alone the tigure is perhaps too pronounced. 



For general purposes, such as tliose in wliich cnu- eastern coast pine timbers 

 are employed, it is not recommended, being too short in the grain and too tliickly 

 studded with knots. But in the interior districts it is invaluable, being used for 

 building, fencing, post and rails — lasting in the ground, according to some cor- 

 respondents, twentv-five vears or more. Others sav it is not so durable. 



For turning into columns for halls and statuary it is particularly well 

 adapted — the numerous knots and wavy " flower " producing a very effective 

 natural decoration. It takes a high polish. 



Like its congener (C. glatica^ it has a reputation for immunity from termites, 

 and on this account is liighl\- valued for house-building in the interior of the 

 country. 



It often contains a good quantity of guaiol which crystallises out on the 

 surface of the freshlv-cut timber. 



'rrans\-erse Tests of Timber — Callitris calcarata. 

 (The following were made upon selected timber of standard size, 38 in. x 3 in. x 3 in.) 





No. I. 





No. 



2. 





No. 



3- 



Size of specimen in inches 



B 



2-98; D 3-00 



B 



3-00 



; D 3-00 



B 



2-95; 



D 2-91^ 



Area of cross section, square inches 





8-94 







9-00 







873 



Breaking load 





1,200 







2,660 







2,540 



Modulus of rupture in lb. per square inrh ... 





2.416 







5,320 







3.34I 



elasticity „ 





1,028,571 





I 



309,090 





1,458,000 



Rate of load in lb. per minute 





109 







380 







423 



(b) Anatomy. 



Structure of the axis. — Two parts of the tree were taken for examination, 

 i.e., early and mature growth. 



A transverse section of a stem of a twelve months old jjlant is seen in 

 Figure 135. It was grown from si'cd in a flower-pot and kept under observation, 

 and was found to be in general structure almost similar to that of a mature tree. 



The dark cell substance, — the manganese comjiouiid, is conspicuous and 

 present in both the wood prosenchyma and incdiillaiA paicmliyma, but these 

 cells are, however, in the former more regularly arranged in single-cell concentric 

 rings than in the mature wood. 



