Two telephones of wondrous make,-- A door, with guards and bell,-- A ventilator, double-bored, Aye does its duty well. {143} And ah! within, this castle grand, Is fitted to a T, With everything that's needful there For serving you or me. And strange to tell, this castle builds Itself, if but supplies Be placed within the open door, With watchful care and wise. {144} It clears itself too of the dust And ashes strewed within, If but the alley-ways are free, And outlets all a-kin. And stranger still, this castle comes And goes where'er the will Of him who holds the rule within Shall bid, his hest to fill. And wondrous more than all beside, This house the temple is, Of Him the great designer, God,-- And "all the earth is his." {145} Now list, and of this castle grand A further tale we'll tell, In language plain, so plain that all May read and heed it well. The food we eat makes all our blood, And makes us children grow; And if we eat improper food It harms from top to toe. We all have teeth quite sharp and strong, With which to chew our food, And in the mouth are glands and glands-- Yes, quite a numerous brood. These glands pour out saliva, free, To moisten what we eat And then a trap-door at the throat Performs a wondrous feat In guiding all the food along Into the Esophagus, And thence to stomach through a pass Called Cardiac Orifice. And here 'tis mixed with Gastric Juice, And into chyme is churned Then through the gateway, Pylorus, As wiser ones have learned. {146} 'Tis in the Duodenum now, Where it is mixed with Bile, And with the Pancreatic juice, Which changes it to Chyle. This Chyle flows on, and all that's fit For nourishment and growth, Is taken up by Lacteals, Or "tubes with many a mouth." These lead to the Thoracic Duct, Which holds a spoonful large, And from this Duct a pipe proceeds Through which it may discharge. Into the great Sub-clavian vein, Which to the Heart doth lead, Whence it is sent into the Lungs, And into good blood made. Then back into the Heart it flows, The muscles there contract, And pump it into Arteries, Which wind to every part. We'd like to tell about the Bones, The Ribs and Vertebras, The Clavicle, or Collar-bone, Breast-bone, and Scapulae; {147} Of hinge, and ball-and-socket joints; Of muscles, tendons, skin, Of lungs and veins and arteries, Of nerves and heart and brain. But, Ah! we should your patience tire, Were we the whole to tell, So, waiting till another time, We bid you now, farewell. {148} _THE RATTLE OF THE BONES_. How many bones in the human face? FOURTEEN, when they're all in place. How many bones in the human head? EIGHT, my child, as I've often said.