11. =Left Lung.= Weighs 350-500 grm. _Size_ (voluminous, collapsed, compare lobes); _form_ (edges rounded, sharp, nodular, saccular or cystic, contractions, depressions, emphysematous enlargements); _pleura_ (examine again more closely. Circumscribed dull-shining or cloudy areas point to some pathologic condition of the lung beneath. Look for evidences of healed tuberculosis, particularly in the pleura of the apices. Secondary carcinoma of the pleura is very common. Primary tumors are rare; endothelioma and sarcoma are the most common forms. Small circumscribed areas of pigmentation usually represent old tubercles); _color_ (depends upon degree of anthracosis, blood-content and condition of pleura, areas showing especial color should be examined closely; most common colors are pinkish-gray normally, grayish, slaty, black, red, brown, dark-red to black); _size of air-cells_ (normally can be seen with naked eye, best seen at apex and borders, about size of pin-points, when larger than the head of a pin they are emphysematous); _lobules_ can also be seen with naked eye, usually polygonal in shape, 2-3 mm. in diameter; _consistence_ (estimate by going over entire lung, pressing the lung-substance between thumb and fingers; air-containing lung is soft, elastic and crepitates; airless areas are hard, firm and do not crepitate). On the cut surface the following points should be noted: _Blood-content_ (anæmia, hyperæmia, hypostatic congestion), _color of cut-surface_, _air-content_, _exudate_ (serous, purulent), _consistence_ (hard, soft, elastic, caseous, brittle, crumbling), _character of surface_ (smooth, granular, nodular, cavities). Cavities should be described according to their position, size, shape, contents and character of their walls. 12. =Right Lung.= Weight 420-620 grms. Note size, form, color, surface, size of air-cells, lobules, consistence, blood-content, air-content, exudate, consistence and character of cut-surface, as in case of left lung.