OF ARTS AND SCIENCES. 159 



Four Iiundred and second meeting. 



June 27, 1854. — Monthly Meeting. 



The President in the chair. 



Professor J. S. Cooke presented a memoir " On Stibiobi- 

 zincyle and Stibiotrizincyle, two new Compounds of Zinc and 

 Antimony." This memoir was referred to the Committee of 

 Publication. 



Four Iiundred and third meeting. ' 



August 9, 1854. — (Quarterly Meeting. 



The President in the chair. 



At the request of the Treasurer, the following vote was 

 laid before the Academy, and unanimously adopted : — 



" Voted, That the Secretary be directed to inform the executors of 

 our late esteemed associate, Dr. George C. Shattuck, that the Acade- 

 my have received his bequest, a share in the Cocheco Manufacturing 

 Company, and to express their grateful sense of this mark of his 

 regard." 



A paper was received from Professor Gray, entitled, " Char- 

 acters of some New Genera and Species of Plants in a Col- 

 lection made by George Thurber, Esq., of the late Mexican 

 Boundary Commission, chiefly in New Mexico, Southwest 

 California, and Sonora." The plants described are Ranuncu- 

 lus hydrocharoides ; Argemone fniticosa, Thurber ,• Malvas- 

 trum Thurheri ; Ahutilon Thurberi ; Thurheria thespesioides, 

 a new and striking Malvaceous genus allied to Thespesia; 

 Holacantha Emoryi, a new genus of Simarubaceas allied to 

 Castela ; Guaiacum Coulteri ; Astragalus Thurberi ; Dau- 

 bentonia Thurberi ; Robinia Neo-Mexicana ; five new spe- 

 cies of Dalea ; Hosackia argophylla ; Acacia ? crassifolia, 

 an anomalous species as to the foliage ; Potentilla Thurberi, 

 a new red-flowered species ; Petalonyx Thurberi, an interest- 

 ing addition to the tribe Gronoviese of the order Loasaceas ; 

 Eremiastrum bellioides, an Asteroid genus, intermediate be- 

 tween Erigeron and Bellium ; Melampodium longicorne ; Dy- 



