3231. Reptilia. 7 Color Photomicrographs. 1. Lacerta, lizard, skin, l.s. 2. Lacerta, t.s. young specimen 3. Lacerta, t.s. of jaw, changing of teeth 4. Lacerta, l.s. of brain 5. Lacerta, l.s. of heart 6. Lacerta, gland pore on femur of male, l.s. 7. Lacert