Newton's lantern slide catalogue (1920s)

43, Museum Street, London, W.C.l. 221 A F O BOTANICAL PLANT ORGANS, SPORES, FERTILIZATION, &c. A new series of Photomicrographs from very carefully prepared specimens, showing the Spores, Cluster Cups, Conoeptaoles, Sexual Methods of Eeproduotions, Diatoms, &o. Plain Slides, each. 1 Dividing nucleus in Pinus. Showing formation of the Nuclear Spindle, 2 Dividing nucleus in Pinus. Showing formation of cell plate which eventually forms a cell wall. 3 Dividing Nucleus in young Bean Root. T. Sec, ot portion of young root of the bean showing Nucleus. Chromatin in filament dividing into V’s. 4 Diatom; AulacodiscusOrientalis, All the diatoms are placed in the series as repre- senting plants which reproduce by fission. 5 Triceratuim Favus. 6 Stamoneis Enicentuon. 7 Arachnodiscus Ehrenbergii. 8 The same, showing growth of* connecting tubes before formation of Zygospores. 9 Same, more highly magnified. 10 Spirogyra in Conjugation, showing Zygospores and spiral filaments. 11 The same, showing Zygospores more highly magnified. 12 Vaucheria. Showing the growth of the new plant from the zoospore; also showing the oogonia and antheridia 13 Saprolegnia growing on an Ant s Egg in water. Showing ends of filameius divided off and developing zooids. 14 Portion of the same more highly magnified. 15 Low power view of same. 16 Sexual method of reproduction showing the oos- pore being fertilised by the clasp- ing antheridia. 17 Low power view of the same. ^ 18 Reproductive Organs of Chara. Antheriduim and young Carpogonuim of Chara Fragilis. 19 Reproductive Organs of Chara. Same, much older stage, both show the winding cells containing and enclosing the oospore. 20 Reproductive Organs of Chara. Same as No. 19. 21 Reproductive Organs of Chara. Burst Anthe- riduim of Chara, showing the Manubria with Septate filaments attached containing the coiled antherozoids, 22 Male Concep. of Fucus, Section through the Thallus of Fucus showing Male Conceptacle. This shows the fila- ments as cree-like forms which produce the antherozoids and the orifice by which they escape. 23 Male Concep, of Fucus. Filaments highly magni- fied showing the contained an- therozoids, ^ 24 Female Concep. of Fucus. Section through r^al- lus of Fucus showing Female Con- ceptacle. This shows the Mother cells growing among the P^ra- physes, some of the former dividing up into daughter cells which form the oospores, The orifice is also shown by which they pass into the water. . . _ 25 Spores of Fungus (Po/y/JOi-ns). Section of Furigus {Polyporou^) showing production of spores on the basidia. 26 Cluster Cups. Section through group of Cluster Cups on the Coltsfoot, showing the spores being produced. The my- celium can also be seen in placfes. 27 Apotheciuni of Lichen. Thallus and Apothecium of Lichen (fo iaceousi,. showing structuie of the Thallus and Apo- ihecium or spore-bearing organ. 28 Apothecium of Lichen. Section through the Apothecium of foliaceous Lichen showing the spores developing in the asci. 29 Antheridia of Liverwort. Section through the Thallus of a Liverwort, showing the male organs, the Antheridia developing in the Anlheridial receptacle. 30 Archegonia of Liverwort, Marchantia Polymorpha in situ. 31 Marchantia Polymorpha. L. Sec. of Receptacle of Marchantia Polymorpha show- ing the Archegonia in section. 32 Spores and Elaters of Marchantia. 83 Antheridia of Moss. Long, section through Moss Plant,showing the Antlieri'dia(male organs) in situ. 84 Archegonia of Moss. Long, section of Moss Plant, showing Archegonia in situ among the leaves. 35 T.S. Capsule of Moss {Polytrichum Commune). Tiansverse section, showing wall of the capsule, spore sac and colu- mella in section. 36 Moss Capsule. Long, section of Capsule of Moss, showing Spore Cavity, Columella, &c. 37 Section through Prothallus of Fern, showing Antheridia in different stages *of development. 38 Archegonia on ditto showing canal and egg cell. 39 Sec. through Sori of Fern, showing spore cases with their thickened border, the whole being covered over by the Indusium. 40 Fructification of Equisetum. Transverse and Long. Sec. of Sporophvll of Equi- setum showing spore cases in situ. 41 Spore case of Equisetum. Long. Sec. through spore case of Equisetum showing spores in situ. It also shows ex- tremely well the peculiar thicken- ing of the cell walls of the spore case by means of which the spores are dispersed. 42 Spores of Equisetum with the filaments coiled round them. 43 Spores of Equisetum with filaments expanded. 44 Sporophyll of Lycopodium. Long. Sec of Sporo- phyll of Lycopodium (Club Moss), showing spores in situ, also the peculiar structure of the capsule wall where it ruptures at the top. 45 OvuUferous Scale of Larch, showing the structure of the scale, its ovule, and the micropyle. 46 OvuUferous Scale of Pinus. Long. Sec. of cone of Pinijs, showing the scales with the Ovules at their base. The Ovules show the micropyle, &c., extremely well. 47 Ovule of Hyacinth. Long. Sec. of Ovule ot Hy-icinth, showing the Egg Cells, Antipodal Cells, and the Embryo- sac. 48 Anther of the Turks Cap Lily. Older stage, Trans, sec. of y.oung Anther of the Turks Cap Lily, showing the Mother cells, dividing to form the Pollen Grains. 49 Anther of Turks Cap Lily, Young stage. Trans. ' sec. of Anther of the Turks Cap Lily, showing the structure of its I various parts. 50 Long. Sec. ot Embryo of Wheat showing all its I different parts.