Lesson xxxix.] OF THE BLOOD. 30-1 



conceive how the Circulation is carried on after 

 amputation has been performed*. 



From what little has been advanced in this and 

 the two preceding Lessons, the unprejudiced young 

 reader will rind a striking di-play of the wisdom 

 and goodness of our CKEATOR. To those who 

 still hold to the negation of such a Being, I scarce- 

 ly know what to say: for thev who live, move, 

 think, and act, must be left without excuse, if they 

 deny or forget GOD, or refuse to honour or be 

 thankful to "him. Those who withstand the evi- 

 dence of the works of nature, when properly ob- 

 served, are not likely to be convinced by rational 

 deductions ; but will probably continue infidels 

 (unless their hearts be changed by Divine Grace) 

 untH they are convinced of their fatal mistake, by 

 experiencing the indignation of that ALMIGHTY 

 B. ING, whose existence they have so impiously 

 denied. * 



But this, I sincerely hope, will not be the case 

 with any of the youthful perusers of these Lessons. 

 However, in this sceptical age, when every part of 

 Divine Truth is questioned, opposed, and, alas ! too 

 frequently holden in derision, it becomes us to be 



* With respect to the velocity of the circulating Blood, and 

 the time in which the whole quantity thereof has undergone a 

 complete circulation; although several computations have 

 been made, the matter is not decisively settled. Dr. Jurin 

 and Dr. Keill have most distinguished themselves in inquiries 

 of this nature; but they are far from agreeing in their con- 

 clusions. The substance of their calculations and experi- 

 ments may be seen in Dr. Reel's improved edition of CHAM- 

 CYCLOPAEDIA, under the articles Blood and Heart. 



wary j 



