Monograph of the Palaeontographical Society . 1. A young specimen; natural size. 1 a. The same, magnified to show the structure of the wall. ] b. Vertical section, magnified, so as to show the structure of the columella, the dissepiments, & c. Calice, magnified; 1, septa of the first cyclum; 2 secondary septa; 3, septa ofthe third cyclum ; 4, 5, septa of the fourth and fifth orders, constituting thefourth cyclum. 1 d, 1 e. Specimens remarkable by their great length. Parasmilia Mantelli (p. 49). Fig. 2. Side view of the corallum; natural size. 2 a. The same, magnified. Parasmilia serpentina
Monograph of the Palaeontographical Society . 1. A young specimen; natural size. 1 a. The same, magnified to show the structure of the wall. ] b. Vertical section, magnified, so as to show the structure of the columella, the dissepiments, & c. Calice, magnified; 1, septa of the first cyclum; 2 secondary septa; 3, septa ofthe third cyclum ; 4, 5, septa of the fourth and fifth orders, constituting thefourth cyclum. 1 d, 1 e. Specimens remarkable by their great length. Parasmilia Mantelli (p. 49). Fig. 2. Side view of the corallum; natural size. 2 a. The same, magnified. Parasmilia serpentina (p. 51). Fig. 3. Side view of the corallum; natural size. 3 a. Calice, magnified. 3 b. Portion of the wall, magnified. Cgelosmilia laxa (p. 52). Fig. 4. Side view of the corallum; natural size. 4 a. A specimen, the growth of which has been intermittent; natural b. The specimen No. 4, magnified, to show the structure of the wall. 4 c. Calice, magnified. Parasmilia cylindrica (p. 50). Fig. 5. Side view of the corallum; natural I TAB. FROM THE UPPER CHALK. Cyathina. laevigata (p. 44). Fig, 1, la, lb, Specimens of different forms ; natural size. 1 c. Calico of the specimen fig. 1, magnified. It is to be remarked that in thisspecimen there are only nine pali; these organs not existing in the halfsystems, where the septa of the fourth cyclum are not developed. 1 d. Calice of the specimen fig. 1 b, magnified, and showing the twelve pali and the complete fourth cyclum of septa. Parasmilia Fittoni (p. 50). Fig. 2. Side view of the corallum ; natural size. 2 a Specimen of a different form, magnified to show the structure of the wall. 2 b. Calice, magnified. CORALS FROM THE LOWER CHALK. Synhelia Sharpeana (p. 53). Fig. 3. A branch of this compound corallum ; natural size. 3 a. Portion of the same magnified. Stephanophyllia Bowerbankti (p. 54).Fig. 4. Calicular surface ; natural size. 4 a. Side view of the same, b. Calice, magnified. 4 c. Mural disc, mag
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectpaleontology, bookyea
