 494  157. Our discussions to this point have been confined to a rather restricted class of functions, namely, those described by linear differential equations. However important such functions may be, a computer system incapable of handling nonlinear functions is severely restricted in the range of applications. 158. Fairly intensive alloy studies are under way on all four refractory metals, and a considerably large number of promising alloys have already evolved. While few of these have as yet achieved commercial status, many have advanced to at least the point of pilot production or advanced laboratory scale-up. 159. On the other hand, neither myelography, nor even surgery can adequately differentiate normal disks from degenerated disks in patients who complain of back and leg pain. Myclography adds little or no information to plain lumbosacral x-rays so far as degenerative disk disease is concerned. 160. Nature of Transferable Pyrogen. In order to determine whether the pyrogen transferred ill the above experiments consisted primarily of the originally injected endotoxin or of newly formed endogenous pyrogen, its fever-producing effect was compared in normal and endotoxin-tolerant recipients. 161. As far as the measurement of range-rate is concerned, the total fluctuation at 400 mc/s will be small compared with the required tolerance of 1 m/sec. 162. To investigate whether inagglutinability of virustreated erythrocytes was due to the modification of receptors with consequent lach of adsorption of hemagglutinin or due to failure of red cells with attached virus to form characteristic agglutination patterns, experiments were done to determine if test virus hemagglutinin adsorbed to the theated cells. 163. The results obtained with the urea clearance test are presented in the last line of Table IV. The poisoned mice retain about three times as much urea as normal mice, thereby indicating a suppressed kidney function. Retention of 76.3 per cent neglects the nitrogen that accumulates above control values in the blood and intenstines. 164. As far as the major planets are concerned. Mercury is the only one with bound rotation. I agree with the reduced figure of 494 |
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