ANATOMY AND PHYSIOLOGY
What bird is a desirable neighbor and should have a house built for it?
231.
What bird does great damage to rice fields? 233. What good work is done by the bob-white? 233. What bird rids the air of gnats and mosquitoes? 288. What bird is called the mosquito hawk? 1349. What birds are noted thieves and often steal jewelry? 1147. What bird is accused of killing bees? 1004. What injury is done to shade trees and orchards by the sap-suckers?
1678.
How has it been proved that they eat very few bees? 1004. What bird has a special liking for the long haired caterpillars and
potato bugs? 1929. How do the crows make up for their damage to a farmer's cornfield?
482.
How do the crows like corn that has been dipped in tar? 482. What sort of a scare-crow makes these wily birds very suspiet<H\B?
482.
How are toads of great benefit to man? 1918. What kind of bats settle on the backs of horses and cattle and »uck
blood? 180. Why is the bat a splendid "night policeman"? 180.
IRRIGATION AND FORESTRY.
Did any ancient people use irrigation? 940.
What did the Mormons do in irrigation? 940.
What are the provisions of the Reclamation Act? 940.
When was the first completed works opened? 941.
Where will be the largest artificial lake in the world? 941.
What is the essential part of an irrigation scheme? 941.
What has irrigation done for Riverside, Cal.? 1617, 309.
How may 500 bushels of potatoes be raised per acre? 942.
How many inches of rainfall are needed for dry farming? 942.
What are the 11 arid states? 943.
What connection has irrigation with drainage? 942, 549.
How many acres of swamp land in the U. S.? 1593.
What irrigation plan is now being worked out by the Canadian Pa^^^o
R. R.? 320.
How has the National Irrigation Act helped agriculture? 29. What is drainage? 549. What is a water table? 549. What are the benefits of under-drainage? 549. How many miles of canals in England? 321. What is the most notable drainage canal? 321. What is the origin of the railroad? 1581. What was the first railroad built in the U. S.? 1581. What is the largest railway in America? 1582. What has the automobile done for good roads? 147, 1618. What is forestry? 693. How many national forests are there? 693.
How much timber may any settler cut in a national forest? 693. Where are the national forests located? 693. How does forest soil help the water supply? 694. What is the Forest Service Office? 693. How can a position be obtained in the Forest Service? 693. How have forest fires been reduced? 694.
ANATOMY AND PHYSIOLOGY
What common mistake is made concerning the range of anatomical study? 67.
What is its true scope? 67.
Why did anatomical study begin with the most complex animals instead of with the simplest? 67.
What difficulties beset the pioneer anatomists? 67.
How did Aristotle gain much of his knowledge of anatomy? 67.
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