LXIV.— (/. 61, /. II top

1. When I press my fingers on my wrist, I feel something beating.

2. The blood spreads [se répandre) from the heart into all parts of the

body.

3. The channels through which the blood passes from the heart are

called arteries. (61, 18.)

4. The channels through which the blood returns to the heart are

called veins. (61, 27.)

5. The blood becomes red through its contact [contact, m.) with the

air in the lungs. (62, 38).

6. Every time you breathe the air penetrates into your lungs. (62, 7.)

7. When the air is used up it escapes to make room for new air.

8. The air which enters our lungs causes our breast to heave.