536
THE POPULAR SCIENCE MONTHLY.
| The Green Abalone Shell with Mask of Algæ. | Black Abalone. Shell removed, showing visceral mass terminating in the spiral cœcum posteriorly and the opened gill cavity to the left anteriorly. |
and behind the columellar muscle and foot. From the mouth cavity the gullet leads backward to the enlarged stomach, which is divided into two compartments, and receives the digestive juices from the large digestive gland at the hind end of the body. Two pairs of salivary glands pour their secretions into the buccal cavity. The intestine runs
Green Abalone Dissected. The gills, kidneys, heart and dorsal parts of mantle and columellar muscle have been removed and spiral cœcum turned over to the right.
