1905] CURRENT LITERATURE 435 
SMALL MANUAL of poisonous plants has been prepared by A. BERNHARD 
SmitTH.?3 It contains plants from all countries, with their active principles and 
toxic symptoms, together with the proper treatment in case of poisoning. The 
main divisions are four in number: (1) plants acting on the brain; (2) those 
acting on the spinal cord; (3) those acting on the heart; and (4) vegetable irri- 
ants. Subdivisions on the basis of symptoms lead one easily to the different 
groups of plants.—J. M. C. 
THE ENT ADDRESS of Professor D. H. Scott as president of the Royal 
Microscopical Society dealt with the subject of the so-called Carboniferous ferns,?+ 
which comprise about half of the total known flora. The recent discoveries of 
seed-bearing forms among them were reviewed, and the conclusion reached that 
in all probability only a minority of these reputed ferns are really ferns, and that 
probably the majority of them are seed-bearing plants. a 
ARBER’S has described two new species of the sicieaas Lagenostoma, whose 
chief interest is its relation to Lyginodendron. An important point in connection 
with these new species is that the seeds, “with or without a cupular investment,” 
terminate the ultimate branches of what is probably a modified fertile leaf — 
if =e 
JoHNsTON?®° has published thirty-five new species preliminary to the publica- 
‘tion of a flora of the Islands of Margarita and Coche, Venezuela. Among them 
there is a new genus (Anguriopsis) of Cucurbitaceae.—J. M. C 
IN CONTINUING his revision of Eucalyptus, Marpen' presents E. amygdalina, 
E. linearis, and E. Risdoni, under each species giving the description, synonymy, 
range, and afhinity.—J. M. C. 
SmitH?® has published an account of three diseases of truck crops in Delaware: 
1) a leaf-spot of cucumber, squash, melon, and cantaloupe due to Sphaerella 
citrullina; (2) a leaf-spot of the egg-plant due to Ascochyta lycopersici; and (3) 
3 SmirH, A. BERNHARD, Poisonous plants of all countries. pp. xv+88. Bristol: 
din Wright & Co. 
24 Scort, me H., What were the Carboniferous ferns? Jour. Roy. 
Micr. Soc. 1905: 137-149. pls. 1-3. we 32-33 
25 ARBER, E. A. NEWELL, On some new species of Lagenostoma: a type of 
pesdopemon seed from the Saas (abstract). Annals of Botany 19: 326- 
325. x 
“ Jomsrox - R., New re from the islands of Margarita and Coche, Vene- 
zuela. Proc - Acad. 40 
27 cues : pa A ee revision of the genus Eucalyptus. Part VI. pls. 4. 
ig a by the authority of the Government of the State of New South Wales. 
1905. 25. 6d. 
8 Surru, C. O., The study of the diseases of some truck crops in Delaware. Bull, 
Del. as, . 70. pp. 16. pls. 2. figs. 6. ° 
