SCIENCE— ADVERTISEMENTS 



INSTRUCTORS IN PHYSICS 



GIVING LABORATORY COURSES TO STUDENTS OF 



Chemistry, Biology, Bacteriology, Medicine 



Your endeavor is to give your students training in the use of those instru- 

 ments which will have greatest value to them in their later work. 



Ohm's law, and its application in the Potentiometer — if the student can ac- 

 quire an understanding of these, many of his later needs in electrical measure- 

 ments will have been met. 



GALVftliOr^ETEfi KEY 



THE L & N STUDENTS' POTENTIOMETER 



will prove a most satisfying aid in giving this understanding. To make the neces- 

 sary connections (see diagram) will teach the student what a potentiometer is and 

 how it works. The instrument is durable, of high grade workmanship, and 

 measures to an accuracy of ^ millivolt. 



Electrical measuring instruments are our specialty. It is our business to 

 develop their applications to the different sciences. 



Bulletin S765 may have some valuable suggestions for you 



LEEDS 8c NORTHRUP COMPANY 



ELECTRICAL MEASURING INSTRUMENTS 



4901 STENTON AVENUE PHILADELPHIA, PA. 



