II 



Nrt JftH TWO EYEPIECES 

 *^*^* ••vll Triple NOSEPIECE 



16mm, 4mm and 'imm objectives. 

 Condenser and iris diaphrams 

 Net. S80.00 



SPENCER 



Microscopes 



EXCEL IN 



Optical Perfection 



Mechanical Accuracy 



Durability 



Extra Large Stages 



Protected Fine Adjustments 



Dust-Proof Nose Pieces 



Grace of Outline 



Beauty of Finish 



Convenience 



SEND FOR CATALOGUE 



SPENCER LENS CO. 



362 Seventh Street. BUFFALO. N. Y. 



STAR BRAND yvrsenate of Lead 



Acknowledged by leadiug experts to be tbe very best Arsenate of Lead 

 made in this country. 



The following extract from Director E. A. Bishop, of the Hampton 

 Normal and Agricultural Institute, Hampton, Va., is one of the many 

 testimonials that we have received: 



" Referring to yours of Feb. 4tli, would say, that the pail of ARSENATE OF LEAD 

 which you sent lis, we have tested very carefully on a variety of shrubs and other 

 plants.' We like it very much indeed. It does not injure the foliage when too much 

 is applied, as is the case often with Paris Green, London Purple and some other spray- 

 ing solutions. We find that on our tenderest plants, even when it sticks to the foliage 

 (which it does very well), the leaves are not burnt or injured. This, to us, is a very 

 strong point in its favor." 



Our STAR BRAND contains less water than any other brands on the 

 market, and is consequently better money value. 



We are also the sole manufacturers of the well known 



Star Brand Strictly Pure PariS GreCfl 



which is acknowledged to be of standard quality, and is made to conform 

 with the laws requiring more than 50 per cent of Arsenic Combined with 

 Copper, and less than S}4 per cent of soluble Arsenic. 



It has been used for nearly a quarter of a century, and has yet to 

 record a single failure. 



Write for samples and prices to 



FRED L. LAVANBURG Sole Mdnufacturer 



100 WILLIAM STREET 



NEW YORK CITY. N. Y. 



Please mention the Journal of Economic Entomology when writing to advertisers. 



