PALEONTOLOGY. 397 



1858. Cone and twig. E. Hitchcock. Ichnology of Massachusetts, PI. VII, fig. 2. 

 1890. PachyphyUum hrevifoUum Newberry. Fossil Fishes and Fossil Plants of 

 the Triassic, PI. XXII, figs, 3-3c. 



The L. sillimanni is quoted above, from Hadley, Counnecticut, doubt- 

 less a mistake for Massachusetts, and the plant was carried from here to 

 Europe.' It was described (1S23) from the fisli locality at Sunderland. 

 It occurs at Turners Falls; and I have found it quite abundantly at the cut 

 just south of the south line of Holyoke, below Holyoke dam, and at the 

 adjacent cut on the railroad to Westfield; also in the northwest of Mon- 

 tague, where the road goes down the hill to Greenfield. Its small cypress- 

 like twigs often spread over slabs 2 or 3 feet square. Its small cones, 

 about an inch long, are figured in the last two works cited above. 



ScHizoNEURA PLANicosTATA Rogers sp. 



1883. 8. planicostata Fontaine. Older Mesozoic Flora of Virginia: Mon. U. S. 



Geol. Survey, Vol. VI, p. 14, PI. I, fig. 1. 

 1890. S. planicostata, J. S. Newberry. Fossil Fishes and Fossil Plants of the 

 Triassic, p. 87. 



Palissya? sp. 

 Many flattened fragments of liranclies or stalks of plants occur, 

 especially in the arkose. These are transversely jointed, from shrinkage 

 in the process of change to bituminous coal, and are faintly striated longi- 

 tudinally. Larger trunks occm- at times as cylinders of sandstone crossing 

 the laminations of the sandstone, 12 to 20 inches in diameter. 



President Hitchcock mentions stems of plants "converted into vesic- 

 ular amygdaloid," and he figures a specimen from a bowlder in Amherst, 

 which he evidently supposes came from the upper portion of the Greenfield 

 trap sheet.^ Trunks of this kind are doubtfully referred to the above 

 coniferous genus by Dr. Newberry. The specimen is a tapering, rough- 

 surfaced rod, of rounded, cordate cross-section, 2 feet long, 2^ by 1^ inches 

 at one end, aiid 1| by 1 inch at the other. 



The inclosing rock is a dark greenish-gray diabase, of the type of 

 the freshest, medium-grained rock of the Deerfield bed. 



The tube is made up of a slightly finer diabase, with steam cavities 

 filled with delessite. There is no trace of toE structure in the rock or in 

 the slides of either portion. It is a case where a branch was enclosed in 



'E. H. Lee, Geol. Kept. 1833, p. 233. 



2 Geol. Mass., Final Kept., 1841, p. 457, fig. 96. 



