Location, experience

In all the chemolocation assays with pea crabs, the attraction of crabs from each host race to their respective host was substantially less than 100%, and some crabs chose incorrect hosts, suggesting that there may still be at least the potential for gene flow among populations. These experiments were conducted with adult crabs, and host location experiments with larval or post-larval forms that are normally responsible for initial host selection might be particularly informative. Nevertheless, this series of studies suggests that within-species differences in chemically mediated host location may lead to population subdivision and reproductive isolation among marine species. 

As regards inlet location, experiments showed that if the port for solids return is located far above the gas distributor, as for Type A (Li and Kwauk, 1980a), the solid particles would be immediately suspended after they enter,... 

Even if plants are already successfully operating in other places and the same material from new or existing sources or particulate solids with essentially identical chemical composition must be agglomerated in a new location, experience teaches that it can not be safely assumed that the new installation can use the same design and operating parameters to obtain a product vdth comparable quality. Minute differ-... 

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