r>5 



All oiil break (if the wliilc-inarkccl liissock inolli {(fr>/i/iii \l[<iiur<i- 

 rii iiijxil l('iir()s/l(jiiiii) occurred in ('IcvcIuikI Htiriin; 1 lie sMiiiiiicr, and 

 iiiaiiy slia«le trees were (ler<»liate(l. I am iiit'(iiiiie(l l»\ .Mr. .M. II. Ilor- 

 \atli, who is the superintendeiil <»f the city parks, ilial llie trees in 

 some h»calit ies were (h'foliatecl by tlie hist <)r .Inly and that the suc- 

 oeedinu lirowtli of h'a\cs whidi tiie trees [)Ut lortli were (h'\()ure(l by 

 the second brood of hirva:. .Vs t lie trees in this city, except in the 

 parks, ha\'e a desperate strnj;\i;h' to maintain an e.vistence, few will be 

 able to survixc any continne<l amount of defoliation. 



Late in Anjjjnst the black locusts that are abunihint on the hill.s in 

 Die valley of tlie Ohio Kivei- were badly stri})ped by the small beetle 

 Oclonfotd (lorsdlis. 'IMie trees were bare and l)rown in man\ locali- 

 ties, ami ihe defoliation was ij:eiieral from Gallipolis, Ohio, to (iuyan- 

 dot, W. \'a., a distance of over 50 miles. .Mr. Runner, my assistant, 

 who reported this outbreak, states that lie was infoi-med by parties 

 who had traveled extensively through West Virginia that the same 

 conditions existed in tlie Cumberland Mountains. It would not pay 

 to carry on any extensive work for the suppression of this insect, but 

 in case i)ersons are planting locust trees to be used for posts or [)oles, as 

 is the ease in some sections of this State, it is possible that this insect 

 mav cause considerable loss. 



.Mr. ^Vebster stated that while in Ohio he had i)lante<l, at Woosier 

 several apple trees, the roots of which were badly infested with tlie 

 woolly aphis. The young ti-ees had nuide a good growth, but he was 

 unable to slate what their condition was at the present time. He 

 called attention to the fact that he liad repoi'ted the defoliation of the 

 locust ti'ces along the <)liio Kivei- by OtlonloUi dorsalis about sevi'U 

 years ago. 



A paper was next, read eutitle<l — 



OBSERVATIONS IN 1903. 



liy H. P. Fki.t. AJhaini, X Y. 



The following brief accounts ivlate to some of the more impcu'tant 

 sp«'eies bi'ought to notice during the past season. The year will bo 

 rememl)ei"ed on account of tlie exceeding abundance of i)lant-lice, 

 particularly of species of economic importance. 'I'he attack was not 

 only characterized by excessive severity, but also l)y an undue pro- 

 longation, and this latter may have luM'u due in part to unusual rains, 

 which wei-e not favoral)le to the eomparat ively unsheltered natural 

 enemies, and therefctre probal)ly hinlered them in theii" benelicial 

 work. The apple-tree plant-louse {.Ijiliis iikiH Linn.) was one of the 

 most conspicuous of the destructive forms, and its ravages were so 

 22564— No. 4(5—04 o 



