790 



INDEX. 



Objects, labelling and preserving 

 of, 234, 235. 



collection of, 235—238. 



Oblique Illuminators, 112 — 117, 

 158—160. 



Ocelli of Insects, 661—663. 



Octospores of Fuci, 347. 



(Edogonium, zoospore-of, 331; sexual 

 reproduction of, 333, 334. 



Oersted, Prof., on sexuality of Aga- 

 rics, 365. 



Oidium, 363. 



Oil-globules, microscopic appear- 

 ances of, 168, 169. 



Oleander, cuticle of, 419 ; stomata 

 of, 422. 



Oncidium, spiral cells of, 397. 



Onion, raphides of, 400. 



Oolite, structure of, 759. 



Oo-spores, of Volvox, 258 ; of Vau- 

 cberia, 326 ; of Spbseroplea, 332, 

 333 ; of Oldogonium, 333, 334. 



Opaque Objects, arrangement of 

 Microscope for, 160 — 162; -various 

 modes of illuminating, 162 — 164 ; 

 modes of mounting, 209 — 211. 



Opercula of Mosses, 374. 



Opercidina, 509, 510. 



Ophiocoma, spines of, 563 ; tooth 

 of, 562. 



Ophiurida, skeleton of, 562, 563 ; 

 development of, 570 — 572. 



Ophrydlnce, 467. 



Orbiculina, 491. 



Orbitoides, structure of, 515, 516. 



Orbitolina, 503. 



Orbitolites, structure and develop- 

 ment of, 492 — 198. 



Orbulina, 501, 502. 



Orcbideous Plants, 397, 431. 



Ornithorhyncus, hair of, 706. 



Ortkoptera, wings of, 679. 



Osmunda, prothallium of, 382. 



Oscillator iacete, 322, 323. 



Ostracece, shells of, 597, 600. 



Ostracoda, 639. 



Otolithes of Gasteropods, 619 ; of 

 Fishes, 774. 



Ovipositors of Insects, 682, 683. 



Ovules of Pbanerogamia, 429 ; fer- 

 tilization of, 430 ; mode of study- 

 ing, 431. 



Owen, Prof., on fossil teeth, 762, 

 763 ; on fossil bone, 764. 



Oxytricha-form of Trichoda, 460 — 

 462. 



Oyster, shell of, 597, 600. 



Pachymatisma, spicules of, 530. 

 Pceony, starch-cells of, 398. 

 Palates of Gasteropods, 606—610. 



Palm, stem of, 406—408. 



Palmella, 317. 



Palmellacece, 317—320. 



Palmodictyon, 319. 



Palmoolcea macrococca, life-history 

 of, 244—246. 



Pampean deposit, organic compo- 

 sition of, 760, 761. 



Papillte of Skin, structure of, 731, 

 746 ; of Tongue, 732. 



Parabolic Illuminator, 115, 116. 



Speculum, 122, 123. 



Paramecium, 452 ; contractile ve- 

 sicles of, 457 ; binary subdivision 

 of, 458 ; sexual generation of, 463 

 —465. 



Paraphyses of Lichens, 351 ; of 

 Mosses, 372. 



Parasitic Fungi, 353—364. 



Passulus, fungous vegetation in, 

 358. 



Paste, Eels of, 623. 



Pasteur, M. , his researches on Fer- 

 mentation, 353, 462. 



Patella, tongue of, 607. 



Patellina, 503, 504. 



Pearls, structure of, 599. 



Pecari, hair of, 705. 



Pecten, eyes of, 619; tentacles of, 620. 



Peclinibranchiata, development of, 

 614—618. 



Pediastrea*, structure of, 270 ; mul- 

 tiplication and development of, 

 270—272 ; varieties of, 273. 



Pedicellaria of Echinoderms, 560. 



Pedicellince, 581. 



Peneroplis, 484, 489, 490. 



Penetrating power of Object- 

 glasses, 171, 172 ; increase of, 

 with Binocular, 40. 



Pelargonium, cells of petal of, 425. 



Pentacrinus, skeleton of, 563 ; 

 larval, 573 — 575. 



Perennibranchiota, bone of, 696 ; 

 blood-corpuscles of, 711. 



Peristome of Mosses, 374, 375. 



Perophora, 588—590. 



Petals of Flowers, structure of, 425, 

 426. 



Petrology, Microscopic, 752 — 767. 



Pettenkofer's test, 197. 



Pbanerogamia, elementary tissues 

 of, 386 — 405 (see Tissues of 

 Plants) ; stems and roots of, 

 405 — 417 ; cuticle and leaves of, 

 417—424 ; flowers of, 424—431 ; 

 seeds of, 431—433. 



Phyllopoda, 641, 642. 



Phytelephas, cells of, 397. 



Pigment-cells, 719, 720 ; of Cuttle- 

 fish, 620. 



