23 



are several ladies whose names must be familiar to our readers. The 

 hiatus in the numbering of the appendices is owing, we suppose, to 

 the omission of the accented list of generic names, with their deriva- 

 tions contemplated in the first volume, and to the omission of the 

 mere lists of some of the lower cryptogams, which was all that their 

 incomplete collection and study would authorize. After the men- 

 tion made of the master hands engaged upon this work, we have no 

 need to commend it further to our readers. The volumes, one or 

 both, can be obtained from Sereno Watson, Botanical Garden, Cam- 

 bridge,"Mass. The price per volume to botanists is S5.00. Advise 

 whether to be sent by mail (postage 40 cents a volume) or by express. 

 The Flora of Essex Co.^ Mass.^ By John Robinson, Essex Insti- 

 tute, Salem, Mass. After the preface comes the literature of the sub- 

 ject, and then an introduction giving a general account of the 

 character of the flora. The land plants of the county belong decidedly 

 t© the northern flora, although not so arctic in their character as the 

 h'chens and algae. ''There is an almost total absence of many species 

 common from Cape Cod southward and often found just south of 

 Boston. In contrast to this the Magnolia glaiica is still quite abun- 

 dant at Gloucester, but not found again north of New Jersey. At 

 Cape Ann is the southern limit of the little Sagina nodosa^ and there 

 is also found Potentilla tridenfata^ familiar at the Isle of Shoals and oji 

 Mt. Washington. Essex County seems also to be the southern limit, 

 for this region, of Piniis resinosa (red ^^mt)^ Abies nigra (black spruce), 

 Vaccinium Vitis-Idaea^ Viola rotundifolia, etc., as it is the northern limit 

 oiCiipressus thyoides (white ctdB,x)^Querciis prinoides (chinquapin oak), 

 ^Polygonum Careyi^ Draba Caroliniana^ Lygodium pahnatam (climbing 

 fern), and others. At Boxford is what has proved thus far to be the 

 only New England station for Salix Candida ; and another bog willow, 

 Salix myrtilloides, is occasionally met with. At Andover a locality 

 for Calamagrostis Pickeringii was discovered in the "summer of 1879 ; 

 this species has only been known before at the White Mountains.'' 

 After the Introduction we have a sketch of some of the early botan- 

 ists, and then the Flora, which takes in the Algae, but omits the 

 Fungi. Prof. Robinson has had the aid, in various of the more dif- 

 ficult orders, of specialists to whom he makes his acknowledgments, 

 particularly of Mr. Chas. J. Sprague in the Lichens, and of Mr. 

 Austin in the Musci and Hepaticae. There is a good mdex at the 

 end. Those who know Prof. Robinson's love of good work will not 

 be disappointed in this catalogue, though some of the determinations, 

 in so wide a range of orders, many of them yet imperfectly studied, 

 may admit of difference of opinion. 



Corrcspondance Botanique.—?xo{, Ed. Morren of Liege, Belgium, 

 sends us his annual list of Botanic Gardens, Chairs, Nurseries, Re- 

 views and Societies. The United States seem to be quite well 



reported. Price 3 francs. 



Botanical Exchanges.— "^t have frequently been asked the address 

 of European botanists who would exchange European for American 

 plants. We have before us the Nineteenth Annual Exchange-List of 

 the Schlesischen Botanischen-Vercins. Address Adolph Toepffer, 

 Brandenburg a | H, Prussia. 



