156 EXPERIMENT STATIOX EECOED. 



occurring on different species of maple, the fungi causing tbem being Rhytisma 

 acerimon and R. punctatum. As a lueaus of preventing the spread of this dis- 

 ease it is recommended that the dead leaves lying ui)on the ground be collected 

 and burned, as the fungus passes the winter upon them. 



A pine disease (Jour. Bd. Ag. [London], l.'t {11)01), So. S, pp. 164-166). — It is 

 stated that diseased shoots of pine have been sent to Kew from time to time, 

 but until March, 1906, no definite statement could be given as to the primary 

 cause of the disease by reason of the failure to secure the development of the 

 fungus. 



The disease is confined to the terminal shoots and may be recognized by the 

 yellowing and subsequent shedding of the leaves, followed by the death of the 

 shoots, which die back for a distance of 6 to 10 in. These dead shoots are 

 persistent and furnish centers for infection of other shoots. An investigation 

 of the host plant showed that the injury was due to the fungus Diplodia pinea. 

 a wound parasite. 



Inoculation experiments demonstrated that within 2 months after infection 

 the leaves become yellow and at the expiration of 4 months the leaves have 

 fallen and the shoot is dead. These experiments were carried on with .3-year- 

 old plants of white pine. Scotch pine, spruce, silver fir. and larch, by placing 

 the spores on the young shoots, but positive results were obtained only in the 

 case of the 2 species of pine. 



Although the fungus is quite destructive, its entry to the host was found to 

 depend on the presence of some previous wound and it is probably associated 

 with some insect, but as yet this point has not been settled. 



In the case of nursery stock and young trees the author recommends the 

 removal of all dead shoots to prevent the further spread of the fungus. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



Outlines of zoology for foresters, A. .Jacobi {(Jrtindriss dcr Zoologic fiir 

 Forstleutr. Tiibingen: H. Lauppsclien, 1906, pp. XI +263, figs. HI).— The pres- 

 ent volume is intended as a supplement to T. Lorey's Handbook of Forestry, 

 as it is believetl that in the latter volume the subject of forest zoology was not 

 considered at sufficient length for the purposes of the practical forester. In 

 this supi)lementary volume, therefore, a general account is given of gross and 

 microscopic anatomy of animals. The greater part of the volume is occupied 

 with a systematic account of the various groups of animals which are of 

 economif imix>rtance to the forester. 



Destruction of deer by the northern timber wolf, V. Bailey {U. 8. Dept. 

 Agr., Bur. Biol. Survey Cue. 58, pp. 2). — In northern Michigan, Wisconsin, and 

 Minnesota it is reported that deer are killed in considerable numbers in the 

 deep snow of winter by timber wolves. In this section of the country the 

 breeding season for the wolves appears to be later than in the Rocky Moimtains. 

 Wolves may be destroyed by locating the dens aud killing the puppies, or by 

 the use of traps. 



Game protection in Florida, R. W. Williams. Jr. (U. 8. Dept. Agr.. Bur. 

 Biol Hiirvey Circ. 59, pp. 11, fig. 1). — The essential facts in the history of 

 legislation regarding game protection in Florida are presented, together with 

 a list of the game laws of that State. The author also takes occasion to dis- 

 cuss the present status of game protection in Florida and the functions of game 

 commissioners. 



Notes on the Sabi game reserve, J. S. Hamilton {Transvaal Agr. .Jour., 5 

 {1901), yo. 19, pp. 603-611, pi. 1). — The Sabi game reserve was established in 



