THE LAWS OF ORGANIC 



ed on the supposition that less heat is generated at 

 this season than in winter,, but is explained in taking 

 into account the general and more equable distribu- 

 tion of the blood. 



6. That the beneficial or injurious effect of cold will at all 



times be regulated by the principles here stated, 



7. That the power of generating animal heat is in no case 



to be estimated by the application of cold to the body, 

 nor by the consumption of oxygen ; a difference in 

 the constitution, inappreciable to our senses, will ren- 

 der the former mode incorrect, and the magnitude 

 and activity of the lungs are too intimately connect- 

 ed with other functions of the system, or with the 

 variety of states influencing these, to allow the physi- 

 ologist to deduce legitimate conclusions from such 

 premises. The thermometer is the only means we 

 possess to ascertain this point. 



