13 



lenberg'd or Rock tripe. Umbil : pusiulaia and U : Dille- 

 nii, with species of Slicia and Stey'eocaidon paschale most 

 frequently occurred. Also, Collema nigrescens and Bar- 

 iramia pomiformis. The locality oi. Draba verna, first dis- 

 covered many years since by Dr. Nichols, and pleasantly 

 associated with that botanist, received some attention. 

 This is the earliest as well as the smallest of our spring 

 flowers. Messrs. Alger, C T. Jackson of Boston, and Sea- 

 mann from Germany, investigated the serpentine ledges of 

 Lynnfield. These gentlemen were present by invitation. 

 The entire party viited the remarkable bowlder, called 

 Ship Rock, where interesting observations were made on 

 its probable origin and age. 



Angusi 28, 1849. 



Field Meeting in Essex Woods, Manchester and Vicinity. 



Plants noticed. Sanguisorba Canadensis^ Bidens Chry- 

 sa?ithemoides, Rhexia virginica, Polygonum Sagittaium, 

 Polyg : hydropiper, Lobelia Cardinalis, Poly gala San- 

 guinea, A7-bulus uva ursi^ &c. &c. The afternoon session 

 occurred on the farm of Burley Smith of Manchester. Here 

 on the dry and loose sands of the sea-shore grew the Da- 

 tura Stramonium, var. Tatida, while the rocks, walls and 

 buildings exposed to the sea air, were covered with Par- 

 melia parietifia, PP. saxicola, oreina and murorum. — 

 The structure of some Medusce was exhibited through the 

 aid of the microscope, and the adjacent shores were dred- 

 ged in order to procure the mollusca. Messrs. Stimpson 

 and Girard, of Boston, were present by invitation ; also, 

 several friends from the vicinity. 



June 19, 1850. 



Field Meeting at Hamilton, Essex County. 



The spot selected for the gathering of the party, is con- 

 sidered the most attractive in the vicinity of Salem, in the 

 focus of five considerable pondSj which radiate from it.— 



