20 



BULLETIN 118, U. S. DEPARTMENT OF AGRICULTURE. 



Table V. — Destruction of fly larva: in horse manure — Results with ho rates- 

 Experiments on open piles, New Orleans. La.. November, 1913. 



No. 



Treatment of S bushels of ma- 

 nure; 10 gallons used when- 

 ever liauid was added. 



Num- 

 ber of 



ca- 

 tions. 



Total 

 num- 

 ber of 

 pupa? 

 found 

 after 

 8-10 

 davs. 



Bacte- 

 ria per 

 gram 

 ma- 

 nure, 

 dried 



at 

 100° C. 



Water extract. 



Manure. 



In per cent 



of total 



nitrogen. 



Solids. 



To- 

 tal 

 ni- 

 tro- 

 gen. 



Nitro- 

 gen. 



Am- 

 mo- 

 nia 

 nitro- 

 gen. 



Alka- 

 linity, 

 ! N 20 

 HcSO, 

 per 100 

 G. c, 5 

 ! grams 

 ! ma- 

 nure. 



Series I: 

 1... 



Na-borate, 1 2j pounds dry (no 



water added) ." 



....do.i 



Control (water) 



Series J: 

 1.... 



Na-borate. 2 pounds drv .no ! 



water) j 



do ! 



Control (water). 

 Series K: 



1 Na-borate in solution. | pound 



per gallon 



2 do 



Na-borate 1 in solution, |- pound 



per gallon 



do'.i 



Series L: 

 1.... 



Control (water) 



Calcined colemanite, 3 pounds 



plus water '. 



do 



Mil- 

 lions. 



2 5,000 141 

 = 4.200 172 



10.000 105 



I 



30 .659 

 39 .577 

 2,500 31b. 



Per 



cent. 



39.14 

 34.54 



42.51 

 43.29 

 42.43 



985 

 575 



2 36. 69 



5 43.0S 



3 1,700 ! 38 

 3 1,900 ; 36 

 20,000 ! 6 



3 Control (water) 



3 * 2, 600 ' 38 

 3 * 3. 200 26 

 3 19.000 158 



34.72 



! 43.01 



34.04 



I 30.58 

 ! 30.77 



27.14 



Per 



cent. 



0.60 



.55 



.46 



.6/ 

 .68 

 .63 



Per 



cent. 

 36.67 

 29.09 

 30.43 



44. 78 

 39.71 

 30. 16 



25.00 

 21. 43 



. 47 34. 04 

 , 53 26. 42 

 49 24. 49 



49 



30. 61 



.44 ' 31.82 

 . 43 19. 54 



Per 

 cent. 

 7.33 

 8.18 

 8.69 



12.54 

 11.03 

 8.89 



8.27 



7.50 



11.91 



11.13 



8.78 



16.33 

 9.09 

 6.51 



C.c. 



11.05 

 10.60 

 5.90 



10.20 

 10.90 

 6.50 



12.45 



7.85 



8.55 

 7.35 



6.10 



1 Nitrites and nitrates present. 



2 Approximate. Of pupae from borax-treated piles about 1 per cent hatch. 



3 Of all these only 10 flies emerged after many days in the laboratory. 



* Abnormal in shape and color. Only 1 fly developed in sample of" 500 pupse. 



Table VI. — Destruction of fly larvw in horse manure — Results with borax — Cage 

 experiments at New Orleans. La.. November, 1913. 







Larval mor- 







s 





Water extract. 







tality, 1- 

 quart sam- 



~ 





•O 













• 







ple manure 



ii 





^ 





In per cent of 

 total nitrogen. 



ffl T- 







, 2 days after 



C 





Q 



c 



— l. 







, treatment, i 



~ 





-- 



p 





6 S 





Treatment of S bushels of 





v. 



a 





Co 



1 





•a I 

















No. 



manure with 10 gallons 







= 



Q 



gS 



c 



c 





| 



£ 3> 





of liquid. 







u 



7 







8 







































p 





































5 



f 



| 



"3 





c 



s 



S6 







> 







1 



I 



O 



3 



c 



1 



a 



J»l 







< 



- 



H 



- 



~ 



H 



K 



< 



< 



Series M: 













MUtton. 



P.ct. 



P.ct. 



P.ct. 



C.c. 



1 



Borax. § pound per gallon.. 



5 j 



15 



12 



7.392 



0.51 



33.33 ; 9.41 



19.50 



2 



do 



2 



18 



15 



3.003 



. 00 



IS. IS ! 10. 18 



16. 50 



3 



Borax, \ pound per gallon.. 



35 



38 



3 



7. 452 



.58 



27.59 : 11.55 



13.00 



4 



do 



5 4 



99 



6 



5. 800 



.58 



37.93 ' 10.86 



13.75 





Control (water) 



82 



25 



50 



2. 204 



.74 



16. 22 4. 46 



8.30 



6 



do..... 



22 



204 



10 



3.484 



.84 



14.29 | 1.79 



7.50 



In the cage tests, Table VI. the water-soluble nitrogen, ammonia, 

 and reaction were lower for the controls than for the borax-treated 



