_Collecting in rotten Stumps and Logs._--Success in collecting in rotten stumps depends much upon the more or less advanced stage of decay as well as upon the situation of the log and upon the particular kind of wood. If the decay is very much advanced neither the loose bark nor the interior of the log will harbor many Coleoptera excepting a multitude of _Passalus cornutus_ and its larvae. If the decay is less advanced, but if such log is exposed to the scorching rays of the sun, it will be far less productive than a log in a shady situation. The investigation of the bark of a favorably situated log in the right stage of decay does not need any special instruction, but the decayed wood itself should be pried off with a chisel or trowel, put in the sieve and sifted on the collecting cloth. This is the best way of obtaining the numerous species of rare Micro-coleoptera of various families that inhabit such places. A "red rotten" oak or beech log is more favorable for this mode of collecting than a "white rotten" of the same or other kinds of trees. _Collecting in dying or dead Trees._--Dying or dead trees almost always harbor a large number of Coleoptera and offer an excellent collecting opportunity until the wood becomes thoroughly dry, which usually takes place in large trees two or three years after the death of the tree, and in less time with smaller ones. The bark of such trees is the best collecting place for Cucujidae, Colydiidae, Scolytidae, Histeridae, etc., and it will be found that the shady side of the tree is more profitable than the side exposed to the sun. The numerous Buprestidae, Elateridae, Ptinidae, Cerambycidae, Melandryidae, etc., which breed in the wood can be obtained only with difficulty. Some specimens may be cut out from their holes by a skillful use of the knife or hatchet; others (especially the Buprestidae) may be found resting on or crawling over the trunk in the bright sunshine, while the more nocturnal species may be found on the tree toward evening or after dark, when, of course, a lantern must be used. A large proportion of the species living in the trunks of dead trees also breed in the dead branches of otherwise healthy trees from which they can be beaten into the umbrella, or where the use of the knife is more practicable than in the large trunks. The trunks of freshly felled trees attract numbers of Cerambycidae and Buprestidae and have to be carefully looked over, while the drying foliage of such trees affords an excellent opportunity for the use of the umbrella.