GYMNOSPERMAE. 

 CONIFERAE. 



With the exception of two cones of Picea excelsa and one young cone of Sequoia 

 all the gymnosperms yet found are represented by detached fragments, very difficult 

 to determine. The reason of this may be that they all have drifted from some farsdistant 

 uplands, and in drifting have broken up. The entire absence of the lowland gymno* 

 sperms, such as Taxus is surprising. 



ARAUCARIA? 

 PI. I, figs. 5 a, b, 6 a, b. 



A broken scale of a cone, and a detached seed, which appear to belong to conif* 

 erae, suggested to us the genus Avaucaria. Being unable to obtain fruits of Axaucaxia 

 for comparison, we asked Professor A. C. Seward, who has made a special study of 

 the genus, to look at them. He considers the specimens to be indeterminable. We think 

 it well however to figure them, for they are unlike anything else we have found. 



Scale (point destroyed), length 5.5 mm., breadth 9 mm. Swalmen. 



Seed (gnawed by mouse), length 15 mm., breadth 8 mm. Swalmen. 



Both these specimens were found at Swalmen, and they may belong to the 

 same plant. 



PICEA EXCELSA Link. 

 PI. I, figs. 7, 8. 



Twigs and leaves are abundant at Swalmen, and a few have been found at 

 Reuver and Brunssum. Two cones also occurred at Reuver.We have figured one of 

 these, also one of the cone*like winter buds. 



Length of cone 120 mm. Reuver, Swalmen, Brunssum. 



LARIX EUROPAEA? DC. 



PI. I, figs. 9 a, b. 



A scale of cone, bent upon itself, is difficult to examine and photograph. In size 

 and shape it resembles the scale of Larix europaea, and it agrees very closely in the cell 

 structure. The cells are somewhat smaller and the surface more rough than in Larix 



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