THE WELLINGTONIA 133 



inner, or " mesophyll," tissue has the walls of its cells 

 furnished with plate-like infoldings ; there are but 

 two parallel vascular bundles forming a single midrib, 

 and round this several resin-ducts are grouped. 



The Order is sharply separated into two very une- 

 qual sub-divisions, which we may term Families or 

 Sub-Orders, the Fina'cece and the Taxa'cece. Of the 

 latter group the Yew is the only familiar example. 



The Pinacece are mainly North Temperate forms, 

 and the formation of a cone, the scales of which over- 

 lap and conceal the ovules, is their main distinctive 

 feature. This Family is divided into four tribes, the 

 Taxodi'nece, including the Sequoias, or Kedwoods, of 

 ■California ; the Cupressi'nece, including the Cypresses 

 and Junipers ; the Araucari'nece, including the 

 Chilian, Norfolk Island, and Kauri Pines, and other 

 mainly southern forms'; and the Abieti'nece, including 

 Pines, Spruces, Firs, Cedars, and Larches. 



The TaxodinecB only comprise ten living species, 

 though these form five very distinct genera. Their 

 leaves and cone-scales are arranged spirally, their 

 pollen has no wings, and the bract-scales on their 

 ■cones coalesce with the ovule-bearing scales above 

 them into the mature woody seed-bearing scale. The 

 genus Sequoia, now confined in a wild state to 

 •California and Oregon, is not only represented in 

 a fossil state in rocks of considerable geological 

 antiquitj', but occurred at various periods in the 

 British Isles, as in the Gault blay at Folkestone 

 and in the Eocene lignites of Bovey Tracy. 



In 1795 Archibald Menzies, who accompanied 

 Vancouver, brought home specimens of the Redwood 



