80 ANNUAL REPORT OF THE Off. Doc. 



has a necessary alternating stage on the red cedar in the form of the 

 cedar apple, and it is agreed by plant pathologists that if all the red 

 cedar trees were destroyed the cedar rust of the leaves and fruit of 

 the apple would be at an end. Hence the suggestion issued in the 

 Weekly Press Letter just before Christmas, to the effect that since 

 Christmas trees were to be used, it was desirable from an economic 

 standpoint, that they should be of the red cedar. 



It is unfortunate that we do not have the authority to issue sev- 

 eral thousand copies of this Weekly Press Letter, in order to supply 

 the needs of individual citizens who desire to be placed upon the 

 mailing list, and it is hoped that the State will find it possible to 

 remedy this trouble in the future. 



THE BI-MONTHLY BULLETIN 



The Bi-Monthly Bulletin of the Bureau of Zoology was prepared 

 regularly, and, excepting for the unavoidable delays in the hands of 

 the State Printer, was issued regularly. The subjects treated during 

 1914 were as follows: 



January-March, 1914, Vol. IV, Nos, 1 and 2, ^'Some Birds of Penn- 

 sylvania." ( Continued ) . 



May-July, 1914, Vol. IV, Nos. 3 and 4, "Pests of Truck and Field 

 Crops. Report of Inspection of Nurseries and Importations. Dem- 

 onstration and Supervision Orchards." 



The calls for the Bulletins of this office, giving results of original 

 studies of the Reptilia and Amphibia of Pennsylvania, have con- 

 tinued in an unprecedented manner. From all the States of the 

 Union and all countries in the world have come requests for these 

 Bulletins from scientific workers. They have helped to create a 

 popular interest in these subjects such as never before existed, and 

 have been especially helpful to teachers, who frequently write to 

 us for more literature and for further information on the subjects. 

 It appears that it is quite desirable to republish in one volume the 

 set of our bulletins on the Birds of Pennsylvania, and another on the 

 Reptiles and Amphibians of this State; and it is to be hoped that 

 those persons who are interested in receiving the benefits of such 

 publications will see that the State Legislature provides therefor. 



NURSERY INSPECTION 



The Nursery Inspection service was originally the sole service 

 rendered to the public through the office of the Economic Zoologist. 

 It was and remains of fundamental importance. It is necessary that 

 the nurseries be inspected with the greatest of care by trained per- 

 sons to detect the presence of obnoxious insects and plant diseases, 

 and to prevent the dissemination of pests over the State. It was 

 found that the inspection during the growing season was not suf- 

 ficient, for the two important reasons that the leaves prevented per- 

 fectly satisfactory results of the inspection by the inspector, and 

 also there was a possibility of reinfestation or infection after the 

 leaves fell. Therefore, the nurseries are inspected also during the 

 dormant season. There is no State in the Union which has as many 

 nurseries as Pennsylvania that does as much in regard to a complete 

 semi-annual inspection of all of its nurseries as does this State. The 

 greatest care is taken to watch carefully for all traces of plant dis- 



