int firstSensor = 0;    // first analog sensor
int secondSensor = 1;   // second analog sensor
int inByte = 0;         // incoming serial byte

void setup()
{
  // start serial port at 9600 bps:
  Serial.begin(9600);
}

void loop()
{
  // if we get a valid byte, read analog ins:
  if (Serial.available() > 1) {
    // get incoming byte:
    inByte = Serial.read();
    // read first analog input, divide by 4 to make the range 0-255:
    firstSensor = analogRead(0)/4;
    // delay 10ms to let the ADC recover:
    delay(10);
    // read second analog input, divide by 4 to make the range 0-255:
    secondSensor = analogRead(1)/4;
    // send sensor values:
    Serial.print(firstSensor,BYTE);
    Serial.print(secondSensor,BYTE);         
  }
}