170 



PROCEEDINGS OP THE GEOLOGICAL SOCIETY. 



Plate IV. 



Impressions of Fossil Leaves from a Bed of Clay in the Railway Cutting near 

 Reading (vide supra, p. 88, Plate I. Diagram A. Local Section 5 ; and p. 163). 



[Notes on the relative abundance of the several forms in 

 the specimens of the clay in Mr. Prestwich's collection.] 



Fig. 1 Phyllites... (a.) Single specimen, occurring with " s " in a 



group of " b." 



2 Phyllites... (i.) Abundant: occurs in groups; together 



with "a," "c,""rf," "e," "/," " g," 

 "j," large specimens of "p," " r," " s," 

 " u," and large stem-like bodies. 



3 Phyllites... ( c.) ^ Rare. Single specimens of " c," " J," and 



" e" occur on a small piece of clay, with 



4 Phyllites... (d.) > leaves of " i." A leaf similar to "d" 



occm's also with " I" ; and another, but 



5 Phyllites... (e.) J with a long peduncle, occurs with " />." 



6,7,8 Phyllites... (/.) Abundant. In groups ; together with " A," 



"g," " k," "p," " g," " s," and stem- 

 hke bodies. 

 9, 9*, 9**, 10. Phyllites... (g.) Abundant. In a compressed mass; and 



with " b," "f," "j," and "s." Nearly 

 allied to "l>." 



11 PhylHtes... (h.) Rare (unique). AVith "p" and small 



stem-like markings. 



12 Phyllites... (i.) Single specimen, in very sandy clay. 



13 Phylhtes... (j.) Abundant : in groups, mth " i," "^," "^," 



"p," and stem-like bodies. 



14 Phyllites... (^■.) Rare. Occurs with "/," "ji," "j»," and 



stem-like impressions. 



15 Phyllites... (L) Rare. With a leaf resembling " <7," large 



specimen of "j»," and obscure grass- 

 like impressions. 



16,16* Phyllites... (m.) Rare (two specimens) : with "jw." 



17 PhylUtes... ( m.) Single specimen : with "jt;." 



18 Phyllites... ( o.) Single specimen; with traces of stem- 

 markings similai" to itself. 



19,20,20* ... PhylHtes... (p.) Abundant. Occurs scattered through 



very many portions of the clay; se- 

 veral leaflets often retaining their re- 

 lative positions, as in fig. 20. A form 

 similar to fig. 19, but larger, is also very 

 common. Leaves of " js " occur with 

 "b," "d," "f," "k," "j," "/t," "/," 

 " m," " r," " s," with a leaf like " n," 

 and with obscure grass-hke markings. 



21 Phyllites... (g.) Single specimen : ^vith "/"." 



22,23 Phyllites... ( >•.) Abundant in some pieces of the clay. (The 



relation of the leaf to the stem in fig. 22 

 is very obscure.) 



24,25,26 (Buds) ... ( s.) Common ; occurring with" a," " 5," "/"," 



" ffj" "P " and large "p," " v," and 

 with leaves like "e" and "j" ; but 

 most commonly associated with " b " 

 and " g." (The stem in fig. 24 is not 

 connected with the bud.) 



27 (Stem) ... ( t.) A fen-uginous body in sandy claj'. 



28 (Seeds.')... (w.) Two specimens occur; with "b" and 



stem-like impressions. 



29 Phyllites... (v.) Single specimen, occurring with " «." 



INoie.- — The most abundant leaves are " b," " g," and "p "; less abundant, 

 but also found in groups, are "/" and "j." Fragments of " r," and the buds 

 " s," are not uncommon. Ferruginous relics of pieces of wood are also met with 

 in these clays.] 



