166 DETAILED SYNTHESIS. 



pass in one stage of their progress, as the experiment of 

 forming tissues from the meat of the egg daily takes 

 place, all the tissues being formed from it, and exactly 

 all of it being used. 



90. Now rr FOLLOWS that all the Elements of the 

 tissues must exist at one time, in their course of devel- 

 opment, in the form of albumen, since it is not conceiva- 

 ble that the tissues can be formed in several different 

 ways. 



91. AGAIN, MILK is a substance by which, in many 

 instances, all the food of the creature is supplied, and 

 that liquid is composed of albuminous substances, calo- 

 rific fat and sugar, and chemical compounds : it is, in 

 fact, the meat of an egg diluted with water, and enrich- 

 ed by sugar and more fat. 



92. IF THE PARTS OF PLANTS USED AS NUTRITIOUS 



FOOD ARE EXAMINED, they will also be found composed 

 in part of albuminous substances, called vegetable albu- 

 men, fibrin (gluten), and casein (cheese or curd). 



93. ONE OF THE FIRST OPERATIONS OF DIGESTION is 

 to change the vegetable albumen, fibrin, and casein, and 

 also the animal albumen, fibrin, and casein, into albu- 

 minose ; a form of albumen very similar in all respects, 

 and in the number and kind of its Elements precisely. 

 like the egg-albumen. 



94. IT APPEARS, therefore, that Albumen is a com- 

 pound or station-point, from which an observer may look 

 back toward the simple Elements, and forward toward 

 the Tissues. 



95. THE PRECISE STEPS FROM THE SIMPLE ELEMENTS 

 TO ALBUMEN, or from it to the Tissues, are not well un- 

 derstood. 



96. Bur THE ALBUMEN AND OTHER CONTENTS OF THE 

 EGG-SHELL do not of their own accord assume the form 

 of the tissues of the chicken ; the contents must, in the 



90. What ? 9L What -? 92. What ? 98. What Is ? 94 What ap- 

 pears ? 95. What said of ? 96. What said of ? 



