Table 14.--Prediction of hatchin eriod for Melanoplus sanguinipes at 
Carson, N. Dak., 1945 
——_—_.2._____ 2 = = 
Current 
Average average Effect of } 
maximum maximum Devia- | 1-degree Hatching 
5-day temperature { temperature { tion deviation | Sum of } dates 1/ 
interval is a a(t-t 10-90%)— 
SUE nae [eoree. | js Days Days 
March 2-6----| 26.0 Die G “4.6 | -0.473 | 2.18 | June 9-28 
7-11----| 33.4 44.8 HA enol - .28 | June 7-26 
12-16---- Lae by AS PLease - .65 | June 6-25 
17-21----| 47.8 60.4 1 ai26 ee 079 .34 | June 7-26 
22-26----| 50.1 58.4 Wang i elisa 1.45 | June 8-27 
27-3iss- E5087 52.0 |- 7 | 140 | 1.36 |June 8-27 
April 1-5----| 47.9 3012 poe ih SOS .43 | June 7-26 
6-10----} 50.5 60.0 Oy) a) LOYAL .82 | June 8-27 
11-15----| 53.9 51.0 - 2.9 } = .044 .95 | June 8-27 
16-20----| 61.9 54.2 Sf te ae 2.04 | June 9-28 
21-25----| 59.8 | 48.8 -11.0 - .242 4.73 |June 12- 
H July 1 
26-30----| 67.0 | 58.0 |e) =| seks 7.75 |June 15- 
\ } July 4 
May) Resse) 678s 61.2 Sa |S 209 10.265 |Guncni7. = 
| July 6 
6-10---- 62.3 522 -10.1 | - .463 14.94 |June 22 - 
July 11 
Mesrisisced| Geka 50.4 AG (es LEO | Pee |e BO < 
July 18 
16-20---- 70.8 55.8 -15.0 - .452 29.06 }July 6-25 
21-25---- 70.7 OO arate: {|e > 237 29.32 |July 6-25 
26-30----| 67.3 60.0 1S Ths) 1) ee e227 30.98 |July 8-27 
31-4---- 70.9 56.0 -14.9 - .011 | 31.14 |July 8-27 
June 5-9---- 71.9 54.0 -17.9 .287 26.00 |July 3-22 
1/ Average dates for 10-90 percent hatch - June 7-26, from table 8b. 
Actual dates for 10-90 percent hatch, Carson, N. Dak., 1945 - July 2-23. 
Predicted dates - July 3-22, from last line of table 14. 
5 DR 2 
