INTRODUCTION 
The exercises listed in this manual are designed for introductory courses 
in Dairy Manufacturing. A sufficient number of exercises is included to 
cover eight semester hours (four-fifths) of laboratory work. It is, however, 
best adapted to a course of four or six semester hours (two or three-fifths) 
of laboratory work, since it will then permit a wide choice of exercises, 
according to the type and ability of the student. In case of the tright or 
fast working student additional exercises may be assigned. A number of 
so-called elementary exercises have been omitted from this manual, be¬ 
cause their inclusion would be impractical. In some instances this was 
done because the apparatus and material necessary would be too expensive, 
in others it was merely a matter of choosing the simpler and shorter 
method. 
It is not the purpose to have this manual serve as a text book, but it 
should act as a guide or aid in the study of the text. The manual suggests 
the plan of the work, but for detailed instructions on the operation, the 
text should be used. At the foot of most exercises are given specific 
references to text books most commonly used for a course of this kind. 
Supplementary references to books pertaining to da'rying, found in agri¬ 
cultural libraries, are also included where they seem particularly pertinent. 
The manual is divided into two parts, each of which in turn is divided 
into series of exercises. Part I deals with the analysis of dairy products. 
Part II takes up the home manufacture of several common dairy products. 
Any or all of the exercises of a series may be given for class work. 
Preceding Series I part I is given a list of material that may be checked 
out to each student at the opening of the course or at intervals throughout 
the course as needed. The list is sufficient for a class of ten students. 
Preceding every other series is given a list of additional material necessary. 
A * precedes those items used for but one exercise in the series. 
Attendance: Each student is expected to attend regularly at the open¬ 
ing of the laboratory period and to remain in attendance until the close 
of the period. If his experiment has been completed long before the period 
ends, he should report to the instructor for additional work. An excellent 
plan from the viewpoint of both student and instructor is the initialling 
by the instructor of the observations recorded in the manual by the stu¬ 
dent. This serves as a check on the laboratory attendance, and also in¬ 
forms the student that the exercise is ready for final transcription. The in¬ 
structor will meet the class as a whole in one of the lecture rooms im¬ 
mediately preceding the laboratory period. At this time he will give any 
additional instructions or assignments that he deems necessary. 
Absences must be made up by arrangement with the instructor within a 
reasonable time of their occurrence, usually two weeks. In cases of illness, 
for which a medical excuse has been presented, this time may be extended. 
While in the laboratory the student should conduct himself as a dairy¬ 
man and student. The prime requisite of a dairyman is cleanliness, and 
a student is not expected to leave the laboratory until it is in satisfactory 
condition. 
