This is a nice collection of 90 slides, preparation of botany, plants, diatoms, worms, insects and spiders. On all slides is the description on the slide or box (most in Dutch). There are the following slides: Unicellular organisms (onion epidermis, geranium leaf stem, tube algae, red hornwort, rock algae, tree algae, bladder wrack, Rhoon diatoms), roots (buttercup, celandine, licorice), stems (hydrangea, orchid, pine needle, Christmas rose, firethorn, fern, fan palm, clematis, wild sorrel, aristolochia, date palm, sequoia), wood (thuja, conifer, broom bush, serviceberry, jasmine, rose branch, spindle tree, hazel, pine, nut tree, fawn), leaf (leaf veins, stamen, ficus), pollen (roses, sunflower, cedar, mimosa), fruits (tiger lily, wild pepper, clove, pine scale), seeds (fennel, staghorn fern, pine seed wing), diatoms (from Rhoon ditch, Cyclobs, slipper galls, bryozoans, hydropolyp, obelis, small pine, foraminifera), worms (planaris, dendro, roundworm, tongue roundworm, snail tongue), insects (mosquito larva, head abdomen legs ringed midge, cornea eye fly, proboscis butterfly, wing butterfly, wing powder, wings tongue bee, fore and hind jaws spider, spinnerets, leg tip spider, lizard scales, bird feather, mouthparts mosquito, barnacle, hawk, rushes, sea urchin, bat hair, frog blood, paramecium, housefly legs, pollen, mouth smear. A photo has been taken of all slides. Box size 19x30x4 cm.