WHISTLES ANCIENT AND MODERN. 



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tlie dog's-liead whistle (10) for hunters, and many-ended whistles, 

 like the army whistle with compass (11), the match-box whistle 



CUt-HOi: 



Fig. 4.— Different Kinds of Whistles. 1. Roulette whistle. 2. Swii58 railroad-station a-rent's 

 whistle. 3. Scholar whistle. 4. Another type of the same. 5. Fireman's whistle. 6. Marine 

 regulation whistle. ^ 7. Square whistle with two holes. 8. Eouad whistle. 9. Army regulation 

 whistle. 10. Dog's-head whistle. 11. Army compass whistle. 12. Whistle and horn of three 

 notes. 13. Railroad whistle. 14. Match-box and compass whistle. 15. Belgian whistle. 



(14), cigarette-case whistles, whistling canes, whistling hunting- 

 whips, whistling sleeve-buttons, etc. 



Among the matters to be taken into account in the making 

 of whistles are the effect of the length and the diameter of the 



