 553  in our tests. 435. The authors stated that occipital units bad been studied but the data have not yet been reported. In any event the implication is clear that sensory or association areas are more likely to be crucial. Considerable support for this assumption has been derived from experiments using agencies causing localized interference with normal neuronal function. 436. If the equations connecting a number of variables con- tain all the variables to the first power only (or if the equations are differential equations and contain successive differential coefficients to the first power only) they are said to be linear. 437. Belts were used to handle the pipe during installation. Coating repair was said to be minimized because little or no dama-ge was incurred in handling, storage, transportation and instal- lation. Buttwelded pipe joints were x-rayed to insure sound welds. The coating is said to resist charring at welding temperatures well enough to limit cutback areas at pipe ends to 2 in. 438. Mass-production techniques — notably the highly mechanized production line with the automatic transfer of material from one machine to another — are now well established in a number of industries, motor-car manufacture being perhaps the best known case. 439. It should be kept in mind that tissue culture media cannot be expected to reproduce exactly the conditions of the in vivo environment. It follows that certain variants will be selected and that stable populations even of cytologically diploid cells should be suspected of being genetically diverse and different from the cells of origin. 440. In the pretreated mice, the tumor was accepted in 15 per cent of the cases as compared with 56 per cent of the control mice. In neither Prehn's nor Pevesz's experiments did the pretreatment with normal tissue affect the resistance. In addition, the «immune» mice accepted the skin graft from the tumore donor. 441. We know the transformer to be a device designed for changing the alternating current voltage by means of magnetic induction, the frequency remaining unchanged. 553 |
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