lABORATOllY AND GREENHOUSE STUDIES. 



113 



Table XXVII. — Growth of coconut cultures Nos. 1 to 6 and Bacillus coli in Dunham's 

 solution with raryiiuj (tmow)ds of sodium chlorid, at 22° C, as shown in experiments 

 1, 2, and 3, February 8 to March 14, 1910 — Continued. 



Meduim. 



Dunham's solu- 

 tion— 

 With 1 por 

 cent NaCl 

 (4137). 



With 1.5 per 

 cent NaCI 

 (4138). 



With 2 per 

 cent NaCl 

 (4139). 



With 2.5 per 

 Cint NaCl 

 (.140). 



With 3 per 

 cent NaCl 

 (4141). 



With 4 per 

 cent NaCl 

 (4159). 



With 5 per 

 cent NaCl 

 (4160). 



With 6 per 

 cent NaCl 

 (4161). 



With 7 per 

 cent NaCl 

 (4162). 



10 days, experi- 

 ment 1. 



Moderate growth; 

 small precipi- 

 tate; thin films. 



Moderately cloud- 

 ed; No. 1 hus 

 flocculent sus- 

 pension ;allliave 

 thin films. 



All thinly cloud- 

 ed; small precip- 

 itate. 



All thinly cloud- 

 ed; moderate 

 precipitate. 



14 days, experi- 

 ment 2. 



Nos. 1, 3, and 6 

 tliinly clouded; 

 Nos. 2, 4, and 

 B. coli only 

 slightly clouded. 



B. coli and No. 

 2 are barely 

 clouded; other's 

 are thin. 



No. 2 and B. coli 

 are practically 

 clear with very 

 small precipi- 

 tate; others are 

 thin with small 

 brownish pre- 

 cipitate. 



No. 2 and B. coli 

 are clear with 

 small brownish 

 precipita t e ; 

 others are 

 slightly clouded 

 with sma 1 1 

 brownish pre- 

 cipitate. 



17 days, experi 

 ment 1 . 



Moderately cloud- 

 ed; abundant 

 white precipi- 

 tate; No. 6 has 

 brownish pre- 

 cipitate. 



Same as with 1 per 

 cent except that 

 No .3 has brown- 

 ish precipitate. 



Same as with 1.5 

 per cent except 

 that B. coli has 

 brownish pre- 

 cipitate. 



All except No. 1 

 thinly clouded; 

 No. 1 moderate; 

 all have abun- 

 dant white pre- 

 cipitate. 



Same as with 2.5 

 per cent except 

 that B. coli 

 and No. 4 have 

 brownish pre- 

 cipitate. 



25 days, experiment 3. 



Same as 17 days; addition 

 of H2S0i gave no result; 

 HjSOi-l-NaNOa gave in 

 1, 2, and 5 bright red, 

 which after shaking be- 

 came pink; other tubes 

 were copper red. 



Same as 17 days; in indol 

 test , Nos. 1 , 2 , and 5 rose- 

 violet; the others darker. 



B. coli is thin; others 

 moderate; in indol test 

 No. 1 barely pink; Nos. 

 2 and 5 bright pink; 

 others dark rose as with 

 1.5 per cent. 



Same as with 2 per cent. 



Same as before; in indol 

 test B. coli barely pink; 

 others same. 



B. coli is clear; others as 

 before; in indol test all 

 show a trace of pink. 



B. coli is clear; No. 5 

 is clear; others thinly 

 clouded; in indol test 

 Nos. 1, 2, and 5 show a 

 distinct pink, others a 

 mere trace of pink. 



B. coli is clear; in indol 

 test all tubes show a 

 mere trace of color reac- 

 tion. 



USCHINSKY S SOLUTION. 



Growth in Uschinsky's solution becomes moderate in 48 hours, but 

 never heavy. 



6389°— Bui. 228—12 8 



