原子论。(Atomic Theory)‘Michael Gihaney,’said the Sergeant,'is nearly sixty years of age by plain comutation and if he is itself,he has spent no less than thirty-five years riding his bicycle over the rocky roadsteads and up and down the hills into the deep ditches when the road goes astrayin the strain of winter. He is always going to a particular destination or other on his bicycle at every hour of the dayor coming back from there at every other hour. If it wasn't that his bicycle was stolen every Monday he would be sure to be more than half-way now.''Half-way to where?'Half-way to being a bicycle himself," said the Sergeant.