Activity of BL Lac BL Lac seems to have become active again as indicated by the following observations. YYMMDD(UT) mag observer 971115.425 <143 (S. Takahashi) 971118.719 158: (T. Kinnunen) 971119.523 <143 (H. Itoh) 971121.872 <157 (G. Poyner) 971124.103 <155 (G. Hanson) 971124.540 <143 (H. Itoh) 971127.124 <155 (G. Hanson) 971127.399 <146 (S. Takahashi) 971128.187 158: (G. Hanson) 971129.169 157: (G. Hanson) 971130.169 156: (G. Hanson) 971130.383 <143 (S. Takahashi) 971130.447 <144 (H. Itoh) 971202.838 <145 (G. Poyner) 971203.103 154: (G. Hanson) 971205.096 152 (G. Hanson) 971206.258 152: (G. Hanson) 971210.826 <145 (G. Poyner) 971217.101 147 (G. Hanson) 971221.467 146 (H. Itoh) 971227.094 150: (G. Hanson) 971227.801 149 (G. Poyner) 971228.091 150: (G. Hanson) Regards, Taichi Kato