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APPENDIX. 
A SYLLABUS OF LABORATORY WORK 
The laboratory exercises here outlined have been used by 
the author in his instructional work. They are presented 
because several instructors have expressed a desire for such 
a syllabus. 
While these exercises have proved both interesting and 
profitable to students, the author does not consider the sys- 
tem fully developed, and he will be grateful for suggestions 
that will tend to make it more useful. 
It has not been found practicable to make the lecture 
room and laboratory work fully correspond as to time, but 
the effort has been made to do this so far as possible. 
When the exercises are carried out during the winter 
months, a considerable foresight is essential to have the 
needed materials in condition for use at the proper time. 
It is understood that each student performs the exercises 
outlined, so far as possible, and the apparatus needed is 
provided. The student should be required to write a de- 
scription of the work performed, stating results in every 
case, supplementing his notes by drawings in special cases. 
A greenhouse is almost indispensable to the kind of in- 
struction here described, and if the instruction is given in 
winter, a ‘‘ garden house,” i. e., a glass house inclosing an 
unobstructed area of garden soil is scarcely less important. 
A SyLuasus oF LABORATORY INSTRUCTION 
The numbers in parethesis refer to the paragraphs in the book. 
Cell structure (12). The students examine the pulp of a 
mealy apple and of a potato and cross sections of a young 
