28 General Biology 



Until you have a large accumulation, take ordinary long envelopes 

 4^2 x \0y 2 inches. Fold each clipping and place it in such envelope, 

 writing its title on the upper left-hand corner under the subject like 

 this — 



Biology 

 Frogs 



"Different kinds of Frogs. 



If you do not own the periodical, make out a subject-card just as 

 you would for a lecture, and file it under the proper subject. 



For your regular laboratory work you will always have your draw- 

 ing book. All notes that pertain to the laboratory will be made in that. 



II. Students will find that it is easier not to take notes on lectures. 1 

 Many think they will remember more without notes. This is true if 

 the notes are not looked at again ; but, if they are gone over from time 

 to time, much that is important will be brought back to mind that 

 would otherwise be lost. 



III. Suppose you see an animal, let us say a frog. You must 

 observe : 



(1) Its external characteristics. 



(2) Its similarities to the human being. 



(3) Its dissimilarities to the human being. 



(4) Its normal home. 



(5) Its method of life. 



(6) Its relations to its surroundings. 



(7) The conditions under which you came to see it. 



(8) Its actions, normal and when disturbed. 



(9) Its food and whether it is food in turn for other animals. 



(10) How it comes to be where it is? 



(11) Whether or not it remains in the same surroundings through- 

 out the year? 



This is all studied on the living frog. Every action of a living thing 

 comes under "physiology," which is the science of functions. Physiology 

 must, therefore, be studied on the living plant or animal. 



IV. In the laboratory you take up the internal structure, as well as 

 the development of the organism, which means in the case of the frog, 

 how the animal's eggs grow into a tadpole, and this in turn into a frog. 



V. You are trying to get a complete mental picture of what is 

 known about life and you are trying to get a gauge by which to know 

 when a thing is true and when it is not; consequently, you must think of 



*0f course, each day, after the lecture, the student is to attempt to repeat all that was said in 

 the lecture he has heard, and when he comes to a forgotten point he must consult his notes. 



