344 DR D. H. SCOTT ON THE 



the height of the rays are sufficiently illustrated by the comparison of figs. 12, A, and 

 12, C. Small rays two cells in height are common, and rays only one cell high also occur. 

 In the rays of greater height there is often considerable variation in the dimensions of 

 the constituent cells (see fig. 12, A). The secondary wood, as a whole, has quite a Con- 

 iferous character, and thus offers a striking contrast to the primary structure. 



In some of the tangential sections a large leaf-trace bundle, accompanied by 

 parenchyma, is seen passing out through the wood (see PL V. fig. 13). The strand 

 is rather obscure, as it is cut obliquely ; the smallest elements are central, with some 

 xylem and parenchyma next them, and the structure therefore probably mesarch. The 

 pits on the larger tracheides of the strand can be recognised. It is important to note 

 that in this part of its course the leaf-trace is represented by a single strand and not 

 by a pair of bundles, thus agreeing with C. fascicularis. 



The fragment of stem with bark attached has been already mentioned. The bark, 

 which is about 5 mm. thick, is shown in transverse section, and consists of alternate 

 darker and lighter tangential bands of tissue. The whole mass evidently represents a 

 regular scale-bark ; in some of the darker bands radially arranged peridermic cells can 

 be recognised ; the intermediate softer tissue may be partly phloem ; the larger cells 

 to the outside between the periderm-bands may have belonged to the primary cortex. 

 At one place a broad band of thick-walled periderm is well preserved ; at another, 

 a few displaced fibres can be recognised ; but, on the whole, the preservation is too 

 imperfect to justify a more detailed description. 



As mentioned above, the specimen just described was identified by Mr Kidston with 

 the Araucarites beinertianus of Goeppert,* with which the characters of the secondary 

 wood agree, as shown by Goeppert and Stenzel's diagnosis (1888). " Ar[aucaria3] 

 ligni, stratis concentricis haud conspicuis, tracheidis amplis punctatis, punctis 1-, 2-, 

 rarius 3-serialibus spiraliter dispositis approximatis aut subcontinguis rotundatis, radiis 

 medullaribus latis 1-, rarius 2-serialibus e cellulis crassis 1-10, rarius pluribus super- 

 positis formatis " {Joe. cit.. p. 30). The figures, cited in the footnote, also agree very well 

 with our specimen. On characters of the secondary wood alone, however, one might 

 have hesitated in affirming identity, but Mr Kidston's determination has now been 

 fully confirmed by comparison with sections of the Falkenberg plant, very kindly lent 

 me by Count Solms-Laubach, in one of which the pith and primary wood are included. 

 The section in question is shown in an excellent photograph (Plate VII. fig. 10) among 

 the illustrations to Count Solms-Laubach's second paper on the Falkenberg Culm- 

 fossils^ though on too small a scale for details to be exhibited. The identity of the 



* Araucarioxylon beinertianum, Kr. (Gopp., sp.), 1870-72 ; Araucarioxylon beinertianum, Kraus in Schimper, 

 TraitC d. pale'ont. Vegd., vol. ii. p. 381, 1850 ; Araucarites beinertianus, Gopp., Monog. d. foss. Coniferen., p. 233, 

 pi. xlii. figs. 1-3 ; pi. xliii. fig. 1, 1852 ; Araucarites beinertianus, Gopp., Foss. Flora d. Uebergangs. Form., p. 254, 

 pi. xxxv. figs. 1-4, 1888 ; Araucarites beinertianus, Gopp. u. Stenzel, Nacht z. Kennt. d. Coniferenholzer d..palceoz. Form., 

 p. 30, pi. iv. figs. 36-39 ; Araucarites beinertianus, Gopp., Revision d. foss. Gonif., p. 11 (Bot. Centrabl, 1881, vol. v, 

 p. 396). 



t " Ueber die in den Kalksteinen des Kulm von Gliitzisch-Falkenberg in Schlesien erhaltenen structurbietenden 

 Pflanzenreste. II.," Bot. Zeit., 1893, p. 207. 



