192 THE AMERICAN MONTHLY [June, 



Diplozoon, a parasite in which two individuals unite to form a 

 hermaphroditic individual ; by Mr. Hall a parasitic trematode 

 from the intestine of a snipe, reconstructed graphically from 

 sections; by Dr. Philbrick, slides of carcinoma. 



Dr. Ward explained some methods of graphic reconstruction 

 of organs from sections. 



Mr. Pound called attention to some of the plates in Micheli's 

 Nova Genera Plantarum (1729,) showing some remarkable re- 

 sults with the microscope at an early date. 



^Vashington, D. C. 



May 15, 1895. — In lieu of the May meeting of the Society the 

 annual reception was given at the National Rifles Armory, G 

 street, between 9th and 10th streets northwest. 



The committee of arrangements provided tables and lamps, 

 and care for microscopes sent to the hall the day of the recep- 

 tion. Microscopes thus sent are to have a tag attached giving 

 the name of tlie exhibitor for whose use they are intended. 



NEW PUBLICATIONS. 



A Mamial for the Study of Insects By John Henry Comstock. 

 Ithaca, N. Y., 1895. With 797 illustrations and 7 full page 

 plates. Octavo, cloth, $3.75. 



This is a work which teachers and all learners in Entomol- 

 ogy have been needing for many years. This new book must 

 supersede all previous works by its most practical methods of 

 teaching. The groups of insects have been fully characterized, 

 so that their relative affinities may be learned ; and much space 

 has been given to accounts of the habits and transformations of 

 the forms described. In the matter of nomenclature, hitherto 

 a serious obstacle, the author removes this by making a seri- 

 ous study of the homologies of the wing-veins, and by apply- 

 ing the same terms throughout the work to homologous veins. 

 The result is that the student is required to learn only one set 

 of terms ; and in applying these terms there will be brought to 

 his attention in a forcible manner the peculiar modifications 

 of structure characteristic of each order of insects. 



