Donald 1937 Primitive Area, Berkeley Calif. Dec. 21, 27. Box Trap Gooseberry patch - 30 feet of 26 28. " " East"of " " - Box The following are the mice caught this morning - those marked with # sign are new numbers. Due to not knowing the last serial number I started with #18- #18 - Ad. ♀ Peromyscus truei in trap #13 Ad. ♂ Peromyscus truei in trap 19 - dead # 19 - Ad. ♀ Peromyscus truei in trap 20 # 20 - Ad ♂ Peromyscus truei in trap 21 # 21 - Ad. ♂ Reithrodontmys in trap 22. # 22 - Ad ♂ Reithrodontmys in trap #23 # 24. - Ad ♀ Reithrodontmys in trap 24 I think that the reason for my success on the above line was that I put plenty of food and cotton in every trap. Tonight, however, there will be a lack of food & consequently I will expect a higher mortality.