290 INTRODUCTION TO GENERAL SCIENCE 



5. Farmers' Bulletin No. 377. Harmfulness of Headache Mix- 



tures. 



6. Farmers' Bulletin No. 393. Habit-forming Agents. 

 a. 1505 : 132-135. Headaches. Drugs. 



6. 1506 : 95-96. Results of Overheating. Alcohol. 



c. 1507:56-61. Water. Alcohol. 



d. 1507 : 163-164. Fainting. The Effect of Drugs. 



e. 1509 : 331-335. Poisons, Drugs, and Chemicals. Anti- 



dotes. 



/. 1509 : 335-342. Fainting, Sunstroke, Drowning, and Chok- 

 ing. 



g. 1511 : 371-379. First Aid to the Injured. 



209. READING METERS 



Water, gas, and electric meters are all read in the same 

 manner. The dials are read from left to right, taking the 

 number which the hand, or indicator, has passed. If there 

 is doubt, read the next dial. If this indicates 8, 9, or 0, the 

 number in the preceding dial has not been passed. If, how- 

 ever, the next dial reads, 1, 2, or 3, the number has been 

 passed. 



The number over each dial shows the total amount which 

 one revolution of the hand in that dial would indicate. Thus 

 if the number is 10,000, it means that one revolution of. the 

 hand would indicate 10,000. If the hand indicates 6 in that 

 dial, it means 6000. 



Gas is measured in cubic feet, water in gallons or cubic feet 

 (one cubic foot equals seven and one-half gallons), and elec- 

 tricity in kilowatt hours. The unit of measurement does not 

 affect the reading. To find the amount of gas, water, or 

 electricity which has passed through the meter, subtract the 

 previous reading from the last reading. 



