The positions of the gear shift lever for various speeds are clearly shown in inset.

Marmon. The controls and instruments of the Marmon Model 34 will be grouped conveniently to the driver's seat as clearly shown in the illustrations at Fig. 51. When the switch box lever points to 0, all the electric circuits, including ignition and horn, are "dead"; when at 1, all are "live" lights; at 2, the small headlights and tail light are turned on; and at 3, the main headlights and tail light are lighted. A ground button is provided for shutting off the motor when it is still desired to use the lights or horn when the car is at a standstill. The knob marked Choke should normally be pushed all the way in, but should be pulled out to facilitate starting in cold weather. The right knob marked In Lean-Out Rich may be pulled out if necessary to enrich the mixture, but should be kept in as far as possible for smooth running. A muffler cutout lever and starter pedal are placed near the heel board, under the driver's seat.

The spark and throttle levers are placed above the steering wheel on top of the steering column. Each of these works on one half of the complete circle that serves as a guide member for the levers. The position of the throttle lever for starting is about one inch up from its lowest position and that of the spark lever is advanced to about two inches from the highest position. The ground button is turned as far as it will go, either right or left. The switch box lever should not be at the neutral or dead position. Gradually depress the starter pedal all the way down. If the starter only spins without turning the engine, immediately release pedal and wait until the starter stops spinning. Then push in the starter pedal more slowly. Be careful never to hold the starter pedal only part way down, as this may burn out the resistance in the starting switch. As soon as the engine begins to fire, release the starter pedal and push in the Choke knob. Lower the throttle lever so the engine will not race. To obtain the low speed position, the gear shift lever is moved to the left and pulled back. Moving it to the left and pushing it forward gives the reverse speed. Moving it to the right and forward engages the intermediate ratio. To

Fig. 51.-Arrangement of Control Levers and Dash Assembly on Latest Marmon Model.

engage the high speed the lever is pushed over to the right and pulled back as far as it will go.

Mitchell. The control parts of the Mitchell Six of Sixteen should be readily understood from the detailed illustrations given at Fig. 52. The cowl board assembly is outlined in the upper left-hand corner. The floor board assembly, showing the

Fig. 52.-Control Element of Mitchell Six-of-Sixteen.

clutch and brake pedals, the accelerator and starting button and the brake and gear shifting levers, is shown in the upper right-hand corner. The positions of the gear shifting lever to obtain the various speed changes can be readily ascertained by inspection of the diagram in the lower left-hand corner. The spark is fully retarded and the throttle closed when the levers are on the low point of the quadrant. The instructions previously given for starting the motor of other cars applies to this one as well.

National. The illustration at the left of Fig. 53 shows the appearance of the National driver's compartment when viewed

through the aisleway between the two front seats, while the relation of the various levers and pedals to each other is shown at the right of the cut. Of the two hand levers situated at the right of the driver, the right-hand one is used for changing speeds. This has a short extension lever which works in notches on the shifter rods, which are in turn connected to the shifting pinions in the transmission case. The change speed

control lever works by rocking it on a swivel support, the central position being the neutral one in which all the gears are out of mesh. The forward left-hand position gives the reverse gear, the rear left-hand position the first speed forward; the second speed forward is obtained by placing the lever in the forward right-hand position, and the high speed by placing the lever in the rear right-hand position. The other hand lever, which works on a ratchet, is used for operating the emergency hand brake. The left-hand pedal operates the clutch, the one at the right side the foot brake. The throttle pedal or accelerator is used for increasing the speed of the engine, while a plunger at the extreme right operates the electric starter. The