A Manual of Experiments in Elementary Science: Teacher's Edition (1918)
Curtis, Francis D. · Charles E. Merrill Company · leaf 207
everal days, until decay is obvious from the appearance and smell of the infusion. From time to time make a slide by taking with the medicine dropper a drop of the water at the surface of the pail, placing it upon the slide and covering it with the glass cover. Examine it with the low power, to see… … Fig. 105 (T).1 Protozoa. A , Paramecium; B , Amoeba; C, Lobosa. culture on the slide; then placing the glass cover over the drop, focus under the high power. The cotton fibers serve to some extent in entangling the protozoa and in hampering their movements, thus permitting them to be examined more…
Science · Lattitude · Longitude · Time · Seasons · Metric · Forces · Levers · Work · Pulleys · Heating · Cooling · Convection · Water · Rocks · Air · Soil · Conduction · Thermometer · Winds · Color · Sound · Electricity · Magnetism
Internet Archive · National Library of Education · Public domain (published before 1931). Free to use for anything.
