dK THK MILK. 



NOTES. 



(A) The lower portion of cows' milk that had stood some clays 



was found by Berzelius * to have a specific gravity of 1.O33. 

 and to contain 



Water 928.75 



Cheese with a trace of butter 28.0O 



Sugar of milk 35. OO 



Muriate of potash 1 .?'O 



Phosphate of potash O.25 



Lactic acid, acetate of potash, with a trace of \ 

 lactate of iron - J 



Earthy phosphates 0.3O 



1000.00 



The supernatant cream contained 



Butter 4. 5 



Cheese - 3. f> 



Whey in. 



(B) It may be worth while here to take a general view of the 

 subject of generation. 



Life never occurs spontaneously in matter, but is always pro- 

 pagated from an organised system already endowed with it. Such, 

 at lea>t, appears to be the inevitable conclusion from the facts 

 within our observation. No instance has been known of a plant 

 or animal of any species, whose mode of multiplication may be 

 always easily examined, springing up spontaneous!} ; and although 

 in many other cases the origin often cannot be discovered, yet 

 surely our inability to discover the mode of propagation does not 

 justify us^in denying the existence of it ; but, the general ana- 

 logy, the discovery of the modes in which many species propa- 

 gate which were formerly adduced as instances of spontaneous 



* Medicp-Ciiirurgical Transactions. V. iii. 



