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501. ScHlMPER, \\'. Ph., and Schenk, A., Handbuch dcr I'alaeontologie. iSpo. 



502. ScHLEiDEN, M. J., Sur la signification morphologiquc du placentaire. 

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503. ScHNARF, Karl, Embryologic der Gymnospermen. Handbuch dcr Pllan- 

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504. Schneider, A., Mutualistic Symbiosis of algae and bacteria with Cycus 

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505. ScHUEPP, Otto, Meristeme. Handbuch der Pflanzenanatomie. i. Abteil. 

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506. Schuster, Julius, Bemerkungen iiber Podozamites. Ber. Deutsch. Bot. 

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507. , Ueber die Fruktificanti von Schucizia anomala. Sitzungsbcr. 



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508. , IVelwitschia und Bennettitales. Bull. Soc. Linn. Normandie. 



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509. , Ueber das \'erhaltnis der systematischen Gliederung der geo- 



graphischen Verbreitung und der paliiontologischen P2nt\vickelung der 

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510. , Cycadaceae. IV. Das Pflanzenreich. Vol. I. 1932. 



511. Scott, D. H., The anatomical characters presented by the peduncles of 

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512. , On the structure and affinities of fossil plants from the paleozoic 



rocks. III. Medullosa anglica, a new representative of the Cycadofilicales. 

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513. , On the primary wood of certain araucarioxylons. Ann. Botany 



13:615-19. 1899. 



514. , Studies in fossil botany. 1900. 



515. , Note on the occurrence of a seedlike fructification in certain pa- 

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516. , On the structure and afHnities of fossil plants from the paleozoic 



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517. , Primary structure of certain paleozoic stems. Trans. Roy. Soc. 



Edinburgh 40^:331-65. pis. 1-6. figs. 5. 1902. 



518. , The old wood and the new. New Phytol. 1:25-30. 1902. 



519. , The f crnlike seed plants of the carboniferous flora. Sci. papers 



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520. , What were the carboniferous ferns? Jour. Roy. Mic. Soc. 1905^: 



137-49- pis- 1-3- figs- 32, 33- 



521. , The early history of seed bearing plants, as recorded in the car- 

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