1887.] NEW-YORK MICROSCOPICAL SOCIETY. 19 



ward was justly criticised for painting out the back-ground and 

 surrounding objects in his earlier photographs. But even he 

 profited by criticism as his very latest work shows. 



Mr. Shultz remarked that he had a photograph of Surirella 

 gemma taken by Dr. Van Heurck which he thought was better 

 than Dr. Woodward's. 



Mr. Cox replied that perhaps he had not seen the particular 

 photograph referred to, but that he thought Dr. Van Heurck's 

 work generally showed evidence of very decided manipulation 

 of the negatives, which was greatly to be regretted. He said it 

 was a coincidence that the subject of photography was under 

 discussion at a recent meeting of the Royal Microscopical 

 Society, and that substantially this same criticism was made upon 

 Dr. Van Heurck's work, which he had just made. 



Mr. Cox further remarked that he thought it might be a sub- 

 ject, not only of general interest in connection with this discus- 

 sion, but also of society pride in a fellow-member, if he should say 

 that he had recently received testimony from a gentleman, who 

 makes good use of the camera and of the best modern objectives, 

 that much of his most satisfactory photographic work is still 

 done with a fifteenth, made by Mr. William Wales about twenty 

 years ago. 



On motion, it was resolved that the Committee on Publications 

 be instructed to publish the Journal of the Society as a 

 Quarterly. 



PROGRAMME OF OBJECTS ANNOUNCED FOR EXHIBITION. 



1. Moss Agate : by Geo. E. Ashby. 



2. Blood-stone : by Geo. E. Ashby. 



3. Eggs and Scale of Myiilapsis potnorum, Bouche. The 

 Oyster-shell Bark-louse of the Apple : exhibited by W. Beut- 



TENMULLER. 



V The scale insects, or bark-lice, belong to the family known to 

 entomologists as the Coccidce. This is a division of the sub- 

 order Homoptera, to which belong also the plant-lice [^Aphides), 

 the Cicadas, the leaf-hoppers, and certain other insects. One of 

 the most common and injurious bark-lice is Mytilaspis pomorum, 

 which infests the apple, and does more injury to that tree than 

 any other insect known. (?) It is also found on the following 



