Decomposition in animal products often develops poisonous alkaloids and cases of illness f roiu eating canuec goods are usually traced to this source. ïhere is also an elemeut of dauger in saits that inay be ioriaed by tüe action oí the contenta of the can. Both these sources of danger have been reduced to a minimum by improved naethods of canning, but it is idle to deny that they exist, and they demand reasonable precautiou in pnrchasing and using canhed goods. A Frenen physician has apparently proved to a certainty that the contagions period in whooping cougb, comes previous to the appearance of the "whoop. " Utah has the only deposit of pure pmnice stone in the United States.