. How to use the microscope; a guide for the novice. Microscopes. SOME COMMON OBJECTS 53 different varieties may be a valuable practical acquirement. Starch is obtainable from most vege- table substances, but the grains obtained from wheat, rye, barley, oats, etc., are probably the most common forms favoured by the microscopist. If the worker possesses a polariscope (p. 40) he should certainly examine property mounted starches under polarized light. Probably the most fascinating line of study for the beginner is the observation of the exceedingly numerous minute life-forms, both vegetable and
. How to use the microscope; a guide for the novice. Microscopes. SOME COMMON OBJECTS 53 different varieties may be a valuable practical acquirement. Starch is obtainable from most vege- table substances, but the grains obtained from wheat, rye, barley, oats, etc., are probably the most common forms favoured by the microscopist. If the worker possesses a polariscope (p. 40) he should certainly examine property mounted starches under polarized light. Probably the most fascinating line of study for the beginner is the observation of the exceedingly numerous minute life-forms, both vegetable and animal, which are to be found in fresh-water ponds. Fig. 18.—Net for Collection of Pond-Life. and salt-water rock-pools. To secure the requisite material some collecting apparatus is needed, but this need not be elaborate or expensive. Many a time I have caught abundance of material with a wide-mouthed glass jar which I attached to a string and threw into a pond, drawing it quickly back to me through the water, or allowing it to drag over the mud. But a fine muslin net attached to a wire ring, about 6 or 8 inches in diameter, fastened to the end of a walking-stick, is more satisfactory, particularly if the net is made to the shape of a cone in the apex of which a small round bottle is fastened. The bottle ought not to be too narrow in the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hall, Charles Albert, 1872-. London, A. and C. Black
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Keywords: ., bookcentury1900, bookdecade, booksubjectmicroscopes, bookyear1912
