Ch. XXVI] 



OLD EED SANDSTONE. 



417 



same beds in the Sidlaw Hills, at all the points where fig. 4 is introduced 

 in the section, p. 48. 



Fig. 544. 



Fig. 545. 



Parka cleeipiem, Fleming. 



In sandstone of lower beds 

 of Old Bed, Ley's Mill, 

 Forfarshire. 



Parka decipiens, Fleming. 

 In shale of lower beds of Old Eed, Fife. 



Fig. 546. 



Dr. Fleming has compared these fossils to the panicles of a Juncus, or 

 the catkins of Sparganium, or some allied plant, and he was confirmed in 

 this opinion by finding a specimen at Balrudderie, showing the under 

 surface smoother than the upper, and displaying what 

 may be the place of attachment of a stalk. I have met 

 with some specimens in Forfarshire imbedded in sand- 

 stone, and not associated with the leaves of plants (see 

 fig. 544), which bore a considerable resesemblance to 

 the spawn of a recent Natica (fig. 546), in which the 

 ess?, are arranged in a thin layer of sand, and seem to Fragment of spawn 



00 . ° i n i • • of British species 



have acquired a polygonal form by pressing against of Natica. 

 each other ; but, as no gasteropodous shells have been 

 detected in the same formation, the Parka has probably no connection 

 with this class of organisms. 



The late Dr. Mantell was so much struck with the resemblance of one 



Fig. 547. 



Fig. 548. 



Fossa— Old Eed. 



Eecent. 



Fig. 549. 



Fig. 547. Slab of Old Eed Sandstone, •} 

 Forfarshire, with bodies like the : „• 

 ova of Batrachians. L'<g 



a. Ova ? in a carbonized state. fa 



b. Egg-cells ?, the ova shed. J 



Fig. 548. Eggs of the common frog, 

 Itana temporaria, in a carbon- 

 ized state, from a dried-up pond in 

 Clapham Common. 



a. The ova. 



b. A transverse section of the ^ 



mass exhibiting the form of 

 the egg-cells. 



Fig. 549. Shale of Old Eed Sandstone, or 

 Devonian, Forfarshire, with impression 

 of plants and eggs of Batrachians ? 



a. Two pair of ova? resembling 



those of large Salamanders or 

 Tritons— on the same leaf. 



b. b. Detached ova? 



c. Egg-cells (?) of frogs or Banina. 



