Note the octaves in the eleventh line. They should be played in the middle of the bow, slightly detached, the bow being raised by a flexible wrist stroke, the first note of the group being accented. Certain teachers prefer a perfect legato at the point of the bow. The stroke at the middle is freer. Do not press upon the bow-stick, as the bowing must be light, especially in the chromatic passage:
The single detached notes of the last line are more easily played with spiccato bowing at the middle of the bow. They may also be practiced with a short, crisp, light staccato at the point: