458 



RECREATION. 



these numbers may be transposed into, as 

 nearly as possible, the corresponding 

 strength measured in dioptres. As an aid to 

 ready transposition, we append the follow- 

 ing table : 







Nearest corre- 



No. of 



Focal dis- 



sponding lens 



lens in 



tance in 



in old inch 



dioptres. 



inches. 



system. 



0.12 



314.96 





0.25 



15748 



I44. 



0-37 



IO4.99 





0.50 



78.74 



72. 



0.62 



62.99 



60. 



0-75 



52.5 



48. 



O.87 



44-99 



42. 



I. 



39-97 



36. 



1. 12 



34-99 





1.25 



31-5 



30. 



1.50 



26.22 



24. 



i-75 



22.48 





2. 



19.69 



20. 



2.25 



17.48 



18. 



2.50 



15-75 



16. 



2-75 



I4-3I 



15 or 14 



3- 



13.12 



13. 



3-25 



12,11 



12. 



3-50 



11.25 



11. 



3-75 



10.49 



10. 



4- 



9-84 



9- 



4-25 



9.26 





4-50 



8-74 



8. 



4-75 



8.29 





5- 



7.87 





5-50 



7.16 



7- 



In transposing the inch measures into 

 dioptres, or the focal distance in inches into 

 either the inch system or the dioptric sys- 

 tem, choose that lens which most nearly 

 approximates it, preferably s:oing a little 

 higher, if necessary, rather than lower. 



You have now at command the means of 

 making for yourself a serviceable, readily 

 removable lens sight, and can adapt its 

 power to your requirements. At the tar- 

 gets, if you are barred from rest shooting 

 on account of your lens sights, no need 

 for an argument ; simply remove the front 

 glass from the hood, and the rear one from 

 the disc to which it is affixed, and without 

 any change in adjustment, your sights are 

 ready for use on even terms with all com- 

 petitors. 



Now for a few "don'ts." 



Don't get too high power. 



Don't fail to have the lenses centered. 



Don't forget that a lens sight won't help 

 you hold your gun well. 



Don't expect a well made sight to make 

 a poor gun or imperfect ammunition per- 

 form wonders. 



Don't forget that the errors in holding 

 are magnified in direct proportion to the 

 power of your sights. 



E. B. Guile, M. D„ Utica, N, Y. 



WHAT THEY THINK OF MARLIN. 



I received a little pamphlet entitled the 

 "Original Game Hog," which, no doubt, 

 you have seen. As I do not know to 

 whom I am indebted for this exceedingly 

 valuable contribution to contemporary liter- 

 ature, I can not express to him personally 

 my opinion of it. Great care was evi- 

 dently taken to suppress all names. Even 

 the printer, the engraver and the artist 

 omitted theirs ; while the author is so evi- 

 dently ashamed of his that he uses a nom 

 de plume. I do not blame the printer nor 

 the artist. 



As to the alleged "crimes," the only law 

 that governed a sportsman 20 years ago 

 was that game should be either on wing or 

 afoot. Gentlemen who were considered 

 good sportsmen were in the habit of prac- 

 ticing on nighthawks and swallows, or in 

 fact anything that had feathers, and if a 

 person suggested that these creatures did 

 no harm, he was promptly laughed down. 



As to the gars and alligators, you proba- 

 bly had and would have to-day the thanks 

 of every fisherman in the vicinity, whether 

 hook and line or net. 



D.'s suggestion that you withdraw your 

 book, "Hunting in the Great West," would 

 be equally applicable to the works of 

 Frank Forrester, which, I believe, the A. 

 D. G. H. still offers for sale. 



If D. really wants to get down behind 

 someone, why does he not get after some 

 of his fellow subscribers and contributors 

 to the A. D. G. H. about something more 

 recent? Within 3 years ducks and geese 

 have been killed both at the Swan Island 

 Club and the Currituck Club, carried to the 

 club houses, hung on poles, and allowed to 

 rot. These were not fish ducks, but teal, 

 widgeon, sprigs and black ducks, together 

 with Canada geese and whistling swans. 

 The proprietors of Monkey Island Club, 

 Messrs. C. H. Jones and Albert Stone, of 

 Boston. Mass., have, at least, the grace to 

 sell their fowl ; but some members of other 

 clubs prefer to let them rot. Whether they 

 learn this trick from the A. D. G. H., or 

 from D. personally I do not know. They 

 all subscribe to one and read the other. To 

 conclude, "A house divided against itself 

 falls," and if D. has game protection really 

 at heart he should be ashamed of his atti- 

 tude. You are doing a great work, and all 

 advocates of protection should throw aside 

 the past, work unitedly in the present, for 

 the benefit of the future. 



A. S. Doane, Waterlily, N. C. 



Derby LJne, Vt. 

 Editor Recreation : 



Enclosed is copy of a letter I am send- 

 ing Marlin. E .G. Moulton. 



