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restriction against their sale as game be removed.

The use of explosive devices known as "duck bombs" to frighten ducks from the rice fields without injuring them was strongly advocated and two firms in San Francisco, the Racliff Sales Co., 146 Davis St., and the California Fireworks Co., 249 Front St., made a speciality of putting these on the market. On examination I found these "duck bombs" to be what is commonly called a"daylight salute".  They are fired from small mortars, tubes made of heavy paper or galvanized iron two inches in diameter and a foot long that are embedded in the earth for half their length, inclined in the direction toward which it was desired to throw the bomb. When in position the bomb was placed in the mortar and a long fuse ignited with a match. This set off a firing charge in the base of the bomb that threw the bomb itself out into the air where it was exploded through a time fuse in the base. I purchased a considerable number of these bombs (about $50.00 worth in all) and gave them a thorough trial. In addition to using the standard bombs I had a number made up specially in order to experiment with them in various ways. These bombs retailed at from $3.60 to $5.00 per dozen.

In using these bombs the operator worked out along the levees as near to the feeding ducks as possible, set the mortar and then threw a bomb out over the birds. It was best to set two or three mortars, explode one bomb to raise the birds, and light one or two others so that they would throw and explode among the flocks as they rose. The bombs contained the powder making the explosion, magnesium producing a flash, and antimony producing smoke. The amounts of all of these could not be increased without making the bombs too expensive for use.  By experiment it was found however that the relative quan^[[ti]]tes of these chemicals could