. St. Nicholas [serial] . SHOWING THE MUSCLES (i»l AND M*) CUT ACROSS. The shell now opens out easily. One who knows how can open the shell. Iwill tell you. Insert your fingers and pull stead-ily, not trying to open it at once, but simply to keep it from closing. The mussels muscleswill soon get tired, and then you can open outthe shell without difficulty. You have one muscle to extend your armand one to bend it. You have two muscles toopen your mouth and six to close it. Themussel, being inside of the shell, cannot openit by means of a muscle ; but his two valves arejoined by a great ligament
. St. Nicholas [serial] . SHOWING THE MUSCLES (i»l AND M*) CUT ACROSS. The shell now opens out easily. One who knows how can open the shell. Iwill tell you. Insert your fingers and pull stead-ily, not trying to open it at once, but simply to keep it from closing. The mussels muscleswill soon get tired, and then you can open outthe shell without difficulty. You have one muscle to extend your armand one to bend it. You have two muscles toopen your mouth and six to close it. Themussel, being inside of the shell, cannot openit by means of a muscle ; but his two valves arejoined by a great ligament so arranged that itwill hold the shell open all the time. The shellis open unless the two big muscles are A. Hargrave. POCKETS IN THE CHEEKS. Chipmunks, squirrels, and ground-squirrelstake food in their mouths and with their tonguespush it out between the teeth into an elasticpouch (connecting with themouth), thus extending the jjjjj\cheeks. The pock- <^^et - gophers %:have pock-. A POCKET-GOPHER. ets outside the mouth along the front of thecheeks. These pockets extend back under theskin to the shoulders, and are filled and emptiedby the aid of the fore feet and claws. Theyare often stuffed so full of pieces of roots,stems, and leaves as to give a very ludicrousappearance to the little animal. Roots andstems are cut into pieces about an inch longand packed lengthwise. Leaves are folded orrolled to fill the smallest space. »9°5-] NATURE AND SCIENCE FOR YOUNG FOLKS. IO37 ^BECAUSE- WE[WANT TO KNOW CTu^~UovOk. humming-birds cut into flowers for nectar. Alameda, St. Nicholas: We have a morning-gloryvine in our yard, and after the flowers have bloomedthey fall to the ground. I like to make them pop, butI have noticed that nearly all of them have a little holein the side, near the end. One day, as I was swinging MOSS ON THE NORTH SIDE OF TREES. South Orange, N. St. Nicholas: I read the St. Nicholasevery month, and I love the Nature and Science De-par
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