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Prepared Slides
225
Microscopes and Slides—Prepared Slides, continued
Specimens from nine major phyla of “animals without backbones .” The invertebrates demonstrate a progres- sion of complexity leading from the simplest multi-cellular animals—the sponges—to the protochordates, evolutionary ancestors of the vertebrates .
Plant Adaptations— ComparisetTM
Plants have evolved to exist in an amazing diversity of habitats—all of which present unique demands . This selection of four slides focuses on plant structures adapted to extremes of moisture . Structures are from xero- phytic (low moisture) and hydrophytic (high mois- ture) plants . Leaf cross sections from the creosote bush (a xerophyte) and the water lily (a hydrophyte) are compared, as are stem sections from Aloe (a succulent xerophyte) and Elodea (a hydrophyte) .
Catalog No.
ML1401
Description
Plant Adaptations— ComparisetTM
Price/Each
$27.50
INVERTEBRATE ZOOLOGY
Catalog No.
Description
Price/Each
PORIFERA (SPONGES)
ML1184 Scypha (grantia), c .s .
Section to show arrangement of canal system and location of choanocytes (collar cells) .
$5.35
ML1185
Scypha, sec .
Composite of cross section and longitudinal section to show body and osculum .
6.95
ML1187
Leucosolenia, w .m .
Portion of a colony of a simple ascon type sponge .
8.35
ML1188
Spicules, w .m .
Several types of both calcareous and siliceous spicules .
4.75
CNIDARIA (HYDRA AND JELLY FISH)
ML1189
Hydra, w .m .
Specimen to show foot, stalk, and tentacles with nematocysts .
$ 5.55
ML1190
Hydra, c .s .
Section to show dermal layers: entoderm, mesoglea, and ectoderm .
5.70
ML1191
Hydra—budding, w .m .
To illustrate asexual reproduction .
5.95
ML1194
Hydra, sec .
Composite slide of both cross and longitudinal sections .
10.00
ML1195
Obelia, w .m .
Portion of hydroid colony to show vegetative and reproductive polyps .
7.15
ML1436
Aurelia, ephyra stage, w .m . Free-swimming stage .
9.15
PLATYHELMINTHES (FLATWORMS)
ML1197 Planaria, w .m .
Carbon “injected” to enhance visibility of digestive tract .
ML1200 Planaria, c .s .
Composite of sections through three regions including pharynx and intestinal regions— on one slide .
ML1205 Taenia, w .m .
Scolex, immature, mature, and gravid proglottids .
ML1207 Dipylidium caninum, w .m .
Composite slide of the dog tapeworm to show scolex, immature, mature, and gravid proglottids .
$ 5.60
8.50
43.15
27.70
ML1199
Planaria, w .m .
Composite, injected and non-injected on one slide .
8.20
ML1204
Schistosoma mansoni, Sec .
Section of mammalian liver infected with eggs .
11.25
Monocot vs. Dicot—ComparisetTM Four composite slides selected to vividly illustrate the fundamental differ- ences between those two sub-groups of the flower- ing plants . Cross sections of stems, roots, leaves, and flower buds contrast vascu- lar tissue—arranged in a ring in dicots and scattered bundles in monocots; leaf veins—branched in dicots and parallel in monocots; and flower parts—dicots with four or five or multi- ples thereof and monocots with three or multiples thereof .
Catalog No.
ML1394
Description
Monocot vs. Dicot— ComparisetTM
Price/Each
$29.70
ML1206
Taenia, w .m .
Mature and gravid proglottids only .
11.45
NEMATODA (ROUNDWORMS)
ML1208
Ascaris lumbricoides, c .s .
Parasitic nematode in humans, section through gonads of male .
$ 8.15
ML1213
Ancylostoma caninum, w .m .
Dog hookworm, preparation of female .
10.50
ML1215
Trichinella spiralis, w .m .
Causative agent of trichinosis, preparation of female specimen .
11.55
ML1216
Trichinella, sec .
Section through mammalian muscle to show encysted larvae .
8.80
MICROSCOPES AND SLIDES—PREPARED SLIDES continued on next page.