1. Table 4.5 Entries for p-Si in the <100> direction: π_l should be +6.6 and π_t should be -1.1. Thanks to Dr. Svetlana Tatic-Lucic (Lehigh University).

2. Figure 4.29, page 208. In the next edition each curve will have a label indicating the associated etch rate. The direction of the axes will also be indicated. Thanks to Dr. Svetlana Tatic-Lucic (Lehigh University).