6 BULLETIN 1250, U. S. DEPARTMENT OF AGRICULTURE. 
not require expensive apparatus. A Brix spindle reading, which 
gives the soluble solids, can be used as a measure of quality and 
maturity in cantaloupes, and suitable limits are suggested on page 15. 
SUCROSE IN JUICE. 
Since sweetness of juice is a desirable characteristic in melons, 
measurements of the percentage of sucrose as growth advanced 
were made. The results obtained in 1916 and 1917 are shown in 









Table 3 
TABLE 3.—Sucrose in’ juice as an indication of maturity. 
BRAWLEY (1916). 
Stage of development. Stage of development. 
Field ee ~ In- Field | : : In- 
ripe. Fullslip. | Halfslip.| - otnre. ripe. | Full slip .| Halfslip.| j oture 
| 
| 
Per cent. | Per cent. Per cent. | Per cent. || Per cent. | Per cent. | Per cent. | Per cent. 
6. 36 7.28 SoGGe sete es 6.75 5. 59 6. O7 2. 68 
weed aed peGucsen, y loci 4.78 5. 84 6. 74 5. 89 4. 86 
Yolfiguioe Ros Fart Se 1 ay Ae ee fam | So RE BK, eet ep Dewees Us Fe <P! 
7.43 6. 22 ee | dang Seated. 5.81 6. 91 6.56 | = Soe 
6. 03 6. 98 Ca | ee ae eS 
6.55 | 6.52 4.94 3. 04 | 6.40 | 6.61 5.50 | 3.84 
TURLOCK (1916). 
2. 96 4. 82 4.17 3. 40 4.69 5. 21 5. 16 3.12 
| 6.22 5. 80 5. 22 538 4.72 5.15 16. 5278 2. 68 
5.16 6. 21 4. 83 4.01 5.18 4.23 | 3.66 1. 94 
4. 02 5. 60 5. 63 1. 47 3. 87 3.77 | + 3.02 [ Let 
6. 37 6.47 7. 20 4.47 || ————_—_ 
| 5.59 5. 51 5.79 2. 48 | 4.94 5.35 5.10 2.64 
5. 61 6. 03 5. 59 257, | 
BRAWLEY (1917). 
| 
| | } 
52: CREED 5. 84 Sy fed Oi mee ad || 2 8 he 8 7.61 | 2£'7.32 -n--------| 
See Fs 6. 40 OAs A CN ea ks 0) | ONE EE 8. 00 Ayan pteoee ers 
Les ae 6.75 Sry fgg NERS | Cae on SE F757 7.13 a 
rere ie 6. 49 ee PRE | EP ae ry Bie 6. 73 6.63) Esa 
Bes ee 6.7 6. 41 poree 6 108 7. 08 6322), ae 
foebeaind sf 8. 06 674h: | -- terre pr ateeniee 6. 39 6:72 “|2.L Same 
SECA: 7. 16 (R71 el oe RSE | OS See D> 7.77 6 Foie ee 
ee RASS 8. 23 5. 94 Se 6. 11 687.“ Ase 
|---------- 6. 58 5 TOS sre ae | SOE EL St 6. 07 5.80. Gers 
eC eeee at 6. 23 Cy) eee: 5) | TPA SE 6. 40 a ey CS 2 
EBs es et 5.71 GASSES SE eee a! = or yg gia CES fi 
Ba 6. 06 if | nea ee es | ee Pal | ee ee 6.41; 4. =e 
of) ae = 6.18 Bog [x EES es ee be ee C5 ee 
five nde 6.41 5.74 |= So See ae ee 
Laer Se 5. 97 5.70. |. 2 SO el Se eee 
s TELA 6. 99 679° Ree eee ae. ee 5, Se eee 
Petes ass 5. 23 6 2ah| eres preverc ial en ae TT oy eee 
ected rs 6. 68 eS Sd alee eg 3 
Mek fee Sc ak. 7.09 6. 06 Saas ep ie Meee 
bah, tes 7.14 fT Sil Oi Saks | Bhat SS) ek SC OS 6. AR sees 
ete ati a A: es | ERMANNE Ee SPLIT DE oly 
2 epee 5. 56 6. $25 eee 
Bera oe a dna Seaenan | pensensan 6.72 6.81 oe 
Caer 324 7. 50 6.52 | ooo. sseece foe eee) OBE 1 EOS ie eee 

Immature melons had much less sucrose than riper melons. 

‘Al: 
though not great, the difference between the full-siip and half-slip 
sig In this Gase the odds are more than 200 to 1 
that full-sip melons contain more sucrose than half slips. 
melons is significant. 
