8 



perhaps, the most characteristic from the aesthetic side. I refer to 

 the Golden Eod, which is also of great entomological interest from the 

 vast number of insects which either nourish from it or are attracted to 

 its bloom. 



Another feature of the exhibit is a rather extensive and very showy 

 collection of insects, chiefly South American, which is presented to 

 give some idea of the nature and extent of the insect fauna of the 

 tropical regions of this hemisphere. Many of these species, collected 

 by Mr. H. H. Smith, are undescribed, and as the names of these exotic 

 forms would be of little service even where they could be given, and as 

 they are exhibited for other reasons, no attempt has been made at 

 classification or determination. This is to form the showy portion of 

 the exhibit, and, with the Solidago display, appeals to the love of the 

 beautiful in contrast with the remainder of the exhibit, which is scien- 

 tific or educational and has been arranged with little regard to artistic 

 effect. 



The exhibit is made up of the following sections: 



Section 1. — Insects Injurious to Agriculture. 



This section of the exhibit comprises some 602 special exhibits, each 

 of which is an object lesson and pictorial epitome of the life history of 

 a single injurious species, including as far as possible the different 

 stages of growth of the insect; the injury it does, with specimens; 

 its enemies and parasites; the available remedies and preventives, and 

 references to the chief articles where full information may be found. 

 These references are principally to Government and State reports to 

 which the farmer is most likely to have access. These exhibits are 

 grouped together according to the plants or animals affected, and relate 

 solely to orchard, field, and garden crops, the parasites of domestic ani- 

 mals, and household pests. A small representative collection of cases 

 of insect enemies to forest trees has also been added. 



Supplementing the above are exhibits representing specially injurious 

 species of prime importance affecting particular crops, which are ac- 

 companied by wax models of the plants, showing the injury in contrast, 

 for the most part, with models of the perfect plants displayed alongside. 

 Noteworthy in this series are the special exhibits of the Hop Plant-louse 

 (Phorotfon hionuU), and of the Chinch Bug (Blissus leucopterous), which 

 include greatly enlarged models in papier-mache of the insects in diff- 

 erent stages. The Fluted Scale (Icerya purchasi), which has been so 

 prominent of late years in California, and its principal enemy, the 

 Australian Ladybird (Vedalia cardinalis), which has so throughly 

 destroyed or controlled the scale, are also represented in this series, 

 together with enlarged models of the Vedalia. A number of anatomical 

 models made by Dr. Auzoux (Paris), representing the Silkworm and 

 Moth, Honeybee, and Cockchafer are also exhibited. 



