fH THE POPULAR SCIENCE MONTHLY. 



quired some kind of notion on the subject of typhoid fever. Each 

 morning paper became a kind of daily Lancet. It is not much to 

 the credit of the medical profession that there has been a great deal 

 of confusion between typhus and typhoid. The latter, from which our 

 prince suffered, is totally distinct from typhus, and has its own dis- 

 tinctive marks, as much as small-pox itself. An eminent physician 

 suggests that it should be called the pythogenetic fever, whicli is, how- 

 ever, begging the question at issue, which is the great medical prob- 

 lem of our time, whether this disease is the result of malaria or of 

 contagion. Dr. Budd argues that as it is in typhoid fever, so it is in 

 small-pox ; as it is in small-pox, so it is in measles ; as it is in measles, 

 so it is in scarlatina ; as it is in scarlatina, so it is in malignant chol- 

 era : amid all varying phenomena, one thing constant, a specific morbid 

 cause, " a cause which is neither a permanent product of the soil, nor of 

 the air, nor of particular seasons, but which is susceptible of transmis- 

 sion from place to place ; which breeds as it goes, and then again dies 

 out, or becomes dormant, without leaving any sign to mark its track." 

 The slaughter of the Franco-Germanic War is repeated year by 

 year in England by preventible diseases. This enormous mass of dis- 

 ease furnishes ample material for infection on every side. A most in- 

 finitesimal germ, invisible, impalpable, would suffice to infect a single 

 human body, and that body might suffice to infect very many others. 

 It may be said that the link of connection is not always sufficiently 

 clear between the infector and the infectee. In a vast proportion of 

 cases this is clear enough, and it is no argument where it is not. Peo- 

 ple have been taken ill of small-pox even in prison, under solitary con- 

 finement; yet how could we doubt of real though remote infection? 

 Let each individual do his part in the holy crusade against ignorance 

 and disease. Let it be asked, amid contemplated legislation, whether 

 the state cannot give effectual hope. We may then hope to transmit 

 to our children their heritage of earth and time less stained by scald- 

 ing tears and passions of regret than it has been to us and to our 

 fathers. London Society. 



* 



THE EXPRESSION OF THE EMOTIONS. 



WHATEVER may be the ultimate verdict as to the truth of those 

 views which are associated with the name of Darwin, it cer- 

 tainly cannot be denied that Mr. Darwin himself has a profound be- 

 lief in them. The work which he has just published, under the title 

 " On the Expression of the Emotions in Man and Animals," is a new 

 test to which he subjects his own doctrines. He considers the subject 

 from the point of view of evolution, and, though many may consider 



