90 THE PLUM CURCULIO. 
Taste XLVI.—Effect of moisture on transformations of the plum curculio in the ground, 
Barnesville, Ga., 1910. 
SOIL KEPT NORMALLY MOIST. 
Per cent 
at Z Beetles Average a 
Jar No. Larvee. emerging. | time in soil. ao StI 
Days 
11S. Sea Gene REE SEs nomen ortens stoves ekwetcmochoter 16 15 25.53 93.7 
Dt: 35 0 Ee eee See SSG spa oracle Shes acsocbeodveuradarcs- 13 12 25.50 92.3 
Why: = aS Neen e eee at eee mS os She ceSoeeec aecasesecee see 11 11 25.27 100.0 
1) eee ec ARE otae nine ee Res eee Soc 17 13 26.15 76.5 
AZ) 0 PRA ae tee nhac ane srs Seca cepoarnas aoseecTs 2 8 8 28. 12 100.0 
>. (SUR ae EE ty To et Sen near eA BA Neaop Se esas: 15 12 25.91 80.0 
D411 0 Rt ee tok 2 As oe ee eee pence os taroaosoto4 12 11 24. 00 91.7 
SOV LD 2 32 bee Saco eee ene <n 14 14 23.35 100.0 
ALOE SS careep Asbo areu sees cbas san Sedsasos este 106 96S eee cieeie ce | sipeieneeeeeeae 
Fe gee NAN ee ee oo AER eeeee Ieee Sach Sasser oatcecee|sce aesereagsyodcoboscane 90. 56 
SOIL AT FIRST MOIST, BUT ALLOWED TO DRY OUT. 
5,0) 0 USE Ae OE Be eS Shae eee aera area aaic 15 2 27.50 13.3 
2.2 BW Rs et eS A iE SAE OB SSE OO EAE 12 3 25. 66 25.0 
PVE Se SMe ene EA tae Spy omen Se Oe Gee SER oT 14 2 28.00 14.3 
2: ye oe ERR ete Se So a ee See adne Sao SoS 12 8 26. 37 66.6 
DG\/ 0 Pe ee eae eh ane ne eee SANE eer ae Soh er aes 5 3 26. 66 60.0 
otalls sue cn gas- os sateen sons eee eee erate 58 TS iss note cece eee eee 
1etaige a IGT anne Pe ae ae Sa aves aa aa coe soneacoe|bosdacns sslsescosse8oosbostesossas- 31.03 
SOIL DRY. 
100 eee AER e Sees AO Sem seas hele a ee ie emi. AE 13 None... secs Sec nal accom eee 
STV Re cee eet eae pane Nei rere Seer ee 10 None 4oi0 22 ae cele ee eee 
Vfl Ga ee eee Bee Oa et Se eRe BAe ASA ee 17 NOG. Eco 2: soci oo | open eee 
1D. Gee ae Geo r Ooh et aren MC AME on ed aa Smes Comoe 9 Noes... 22: 33s8.cc] saseeeeeeaes 
OK fo topes: Search iaycpeen nie ats eas een Sree eee a ee er rare oleate 12 None; |! 2222422250. | Seen 
No 2) MER ee ei enlarge ener hme ee nde he ya 62") e253 Bios Pee eee eee 
PErGenta ge e255 cok See oie Spe ek mle oie aa tell ese ee tare late et | 
1 Soil watered 34 days after entering of soil by larvee, 9 more beetles promptly appearing. 
2 Soil watered 36 days after entering of soil by larveze, one beetle appearing the following day. 
In the series of jars with normally moist soil, a total of 106 larvee 
was used, yielding 96 adults, or 90.56 per cent. In jars where the 
soil was allowed to dry out, and without further watering, a notice- 
able decrease in the number of adults emerging is shown. From a 
total of 58 larve only 18 adults, or 31.03 per cent, developed. Where 
dry soil was used no adults whatever developed from the 61 larvee 
used. 
Four wooden boxes, 10 by 12 by 8 inches, were used in a more 
extensive test. In two of the boxes ordinary Georgia red clay was 
used, one being kept moist, while the other was dry but was subse- 
quently watered as stated in the footnote. In the other two boxes 
a sandy loam was used, one being kept moist and the other dry. 
The soil in all boxes, however, was moist at the time the larve were 
put in, to enable them better to establish themselves. The boxes 
were covered with wire screen and kept out of doors protected from 
the sun. (For detail, see Table XLVILI.) 
