Pipes should also be laid having a connexion with all the various greenhouses and forcing-houses, each of which should be provided with a cistern for aerating the daily supplies. [Please select]
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The difference in weight of a tablet of the same size before and after aerating amounts to 10 per cent. [Please select]
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** Aerating Water in a Small Tank [241] A simple way of producing air pressure sufficient to aerate water is by the use of a siphon as shown in Fig. [Please select]
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