"The first one was a single discharge. It came from the second story of the Arnold house."
"Where the study was located?"
"Yes, sir."
"You feel positive?"
"I do. I was climbing a ladder at the time and was thrown off my hold by the shock."
"And the second of the explosions?"
"The second came after an interval and was different in character—more like the setting-off of a bunch of firecrackers, but greatly exaggerated in the volume of sound. There can be no doubt this was the fireworks shop in the adjoining building."
"But the first one positively came from the study?"
"Positively."
"A very loud report?"