1.   Already-nervous investors got an additional jolt when New York-based Schlumberger and Houston-based Diamond Offshore both reported disappointing earnings.

2.   Already nervous investors got an additional jolt when New York-based Schlumberger and Houston-based Diamond Offshore both reported disappointing earnings.

3.   Already nervous investors got an additional jolt when New York-based Schlumberger and Houston-based Diamond Offshore both reported lower-than-expected earnings.

4.   This is not a new argument, simply one fueled with an additional jolt of reality Tuesday.

5.   They received an additional jolt after an unexpectedly strong durable goods report for July sent U.S. bonds reeling.