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At 3, P. M., the afternoon session was held in a pavilion 

 on the grounds. The PRESIDENT in the chair. Records 

 read. Donations and correspondence announced. 



The PRESIDENT in his introductory remarks alluded 

 briefly to four sons of the town of Essex who had lived 

 in Salem, and had been conspicuous members of the bar 

 of this county, viz. : Joseph Perkins, Rufus Choate, Jona- 

 than C. Perkins, and the present Judge of Probate, G. F. 

 Choate. 



Mr. JAMES H. EMERTON submitted his report and in 

 answer to questions of several members Mr. Emerton ex- 

 plained the differences between the spiders and their near- 

 est allies. 



The Arachnida consist of three orders, of which the 

 spiders form one, distinguished by the division of their 

 bodies into two distinct regions, by their poison jaws, 

 and by their spinning habits. Another order includes 

 the daddy-long-legs, the scorpions, and a few other small 

 families, most of which have hard-jointed skins like crus- 

 tacea. The third order consists of the mites and their 

 allies, mostly small parasitic animals passing through a 

 metamorphosis after hatching before they get the full 

 number of limbs. To this last order belong the common 

 red spider on plants and the red water spider. 



Mr. S. B. BUTTRICK presented a list of plants collected 

 during the day : 



Krigia virginica. Lysimachia quadrifolia. 



Azalea viscosa. Sisymbrium auceps. 



Potentilla argentata. Galium 



Cistus canadensis. Pyrola rotundifolia. 



Mitchella repens. Viola blanda. 



Marchantia polymorpha. Drosera angusti folia. 



Melampyrum Cornus canadensis. ' 



Viburnum deutata. Pogonia 



