![Practical text-book of plant physiology. Plant physiology. 62 INFLUENCE OF CHEMICALS of the tubes in the two instances. Pollen tubes are apochemo- tropic to the amount of oxygen in the air ( Practical text-book of plant physiology. Plant physiology. 62 INFLUENCE OF CHEMICALS of the tubes in the two instances. Pollen tubes are apochemo- tropic to the amount of oxygen in the air (](https://c8.alamy.com/comp/RE3ERC/practical-text-book-of-plant-physiology-plant-physiology-62-influence-of-chemicals-of-the-tubes-in-the-two-instances-pollen-tubes-are-apochemo-tropic-to-the-amount-of-oxygen-in-the-air-20-per-cent-and-direct-their-tips-away-from-atmospheres-with-this-pressure-of-the-gas-sealing-the-preparation-with-vaseline-should-exclude-the-gas-and-allow-the-tubes-to-grow-in-all-directions-97-chemotropic-stimulation-of-stigmas-for-pollen-tubes-make-a-culture-medium-for-pollen-grains-as-above-using-only-fig-27-chemotropic-reactions-of-pollen-tubes-in-penetrating-the-stomata-of-leaves-injected-RE3ERC.jpg)
Practical text-book of plant physiology. Plant physiology. 62 INFLUENCE OF CHEMICALS of the tubes in the two instances. Pollen tubes are apochemo- tropic to the amount of oxygen in the air (
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![A companion to Blackie's tropical readers, books I and II : containing suggestions for experiemnts and practical work . de, forming Starch. 1. Assimilation.— Picka green leaf in the after-noon of A companion to Blackie's tropical readers, books I and II : containing suggestions for experiemnts and practical work . de, forming Starch. 1. Assimilation.— Picka green leaf in the after-noon of](https://c8.alamy.com/comp/2CE0YEG/a-companion-to-blackies-tropical-readers-books-i-and-ii-containing-suggestions-for-experiemnts-and-practical-work-de-forming-starch-1-assimilation-picka-green-leaf-in-the-after-noon-of-a-day-that-hasbeen-sunny-and-test-withiodine1-starch-will-befound-2-assimilation-will-nottake-place-in-the-darkput-a-pot-plant-in-a-darkcupboard-for-twenty-fourhours-test-with-iodineno-starch-will-be-found-3-if-stomata-are-closed-no-assimilation-will-take-placein-the-morning-vaseline-both-sides-of-a-leaf-pick-itin-the-afternoon-test-with-iodine-and-observe-that-nostarch-will-be-foun-2CE0YEG.jpg)
A companion to Blackie's tropical readers, books I and II : containing suggestions for experiemnts and practical work . de, forming Starch. 1. Assimilation.— Picka green leaf in the after-noon of
![Bacteriology and mycology of foods. Food. BACTERIOLOGICAL APPARATUS of rubber tubing. This ^Uush bulb is filled with platinized asbestos. The cultures are placed in a glass tumbler which is put into Bacteriology and mycology of foods. Food. BACTERIOLOGICAL APPARATUS of rubber tubing. This ^Uush bulb is filled with platinized asbestos. The cultures are placed in a glass tumbler which is put into](https://c8.alamy.com/comp/PFXBK7/bacteriology-and-mycology-of-foods-food-bacteriological-apparatus-of-rubber-tubing-this-uush-bulb-is-filled-with-platinized-asbestos-the-cultures-are-placed-in-a-glass-tumbler-which-is-put-into-the-jar-fig-21-taken-from-smillies-original-pubhcation-will-give-the-details-of-the-asbestos-bulb-exclusion-of-oxygen-seattles-method-ordinary-test-tubes-containing-plain-or-car-bohydrate-broths-are-used-melted-sterihzed-vaseline-is-poured-into-the-tube-until-a-plug-about-in-long-is-formed-the-broth-and-vase-line-are-then-boiled-for-twenty-to-thirty-minutes-in-order-to-expel-any-diss-PFXBK7.jpg)