372 Dr. Wallace on the Oak-feeding 
April 15. Minimum daring night .. «« 46°F. 
at 9.30 a.m. te <5 OAS 
at, I psmnines ie sion 
,, 16. Minimum during night .. <8 50° 
At OraeDe 61 30 se 
atl p.m ti; es Sr ba 
» 17. Minimum during night .. . «54° 
Dt O rae srs ree — moe 
at lL p.m. -.. ar Se 2008 
» 18. Minimum during night .. 5 «82 
atin aati aot S.C at Oe 
at 2 p.m. ae 3. 662 
» 19. Minimum during night .. eeoOr 
at 9.30 a.m. a oe ode 
at’ Zipsms!* 2 a0 ot 25.BP 
» 20. Minimum during night .. 2's 200° 
BtaliOha myers oe iss aianOlse 
at EF p.m... oe ws 602 
» 21. Minimum during night .. . 2-00? 
Bie Serietthe oo 96 ~enn Ow 
at2 p.m. .. oe se 002 
» 22. Minimum during night .. a 462 
Ab) arisen ste ss aie AS? 
at l p.m. .. 50 w~ 040 
», 23. Minimum during night .. 5 oes 
at 10 a.m. .. os ae p0? 
at lep mis: 2% tis soon 
» 24. Minimum during night .. oe 44° 
ateQsa.ment ae <a 
at'Lypsms oe se 200) 
» 25. Minimum during night .. oe ete 
at 9a. ni. ie 39 meme On 
at lap.ms 4. 4 rp Site) 
» 26. Minimum during night . aie 
Atro raat ele ee eon 
I have thought it desirable thus to note and record the daily 
temperatures, that the experience gained in this unsuccessful 
attempt may at least be a guide to future, and, we will hope, 
more successful experiments; and as the larva is ready in early 
spring to emerge almost before the oak sprays are developed, it 
becomes of the utmost importance to ascertain precisely at what 
