666 Pteridophyten. — Floristik, Geographie, Systematik etc. 
entdeckt wurde. In Skandinavien wächst Scolopendrium vulgare 
ausserdem auf den Inseln Varaldso und Lille Batalden an 
der norwegischen Westküste und auf der Insel Moen, Verf. be¬ 
trachtet diese weit getrennte Standorte als relikte Vorkommnisse 
aus der atlantischen Periode. 
Die Halland -Form zeigt sich durch die Skulptur der Sporen — 
relativ hohe, aber kurze, nicht zusammenlaufende Leisten des 
Exosporiums ■— als zu derselben Gruppe gehörig, wie eine grössere 
Anzahl der Formen der atlantischen Flora. Ganz verschieden ist die 
Gotlandsform, deren Sporen ein zusammenhängendes Netz von nie¬ 
drigen Exosporenleisten besitzen; wahrscheinlich repräsentiert diese 
eine besondere Scolopendrium-Rcisse. Grevillius (Kempen a. Rh.). 
Conwentz, H., The Care of Natural Monuments. (Cambridge 
University Press, 185 pp. with illustrations. 1905, price 2/6.) 
In this book Dr. Conwentz extends his campaign for preservation 
of “Naturdenkmäler”, so as to include the English-reading races. 
The expression “natural monument”, new to the English language 
is defined: a monument is usually a results of man’s activity — an 
Obelisk or the prehistoric Stonehedge; natural monuments are erratic 
blocks and other traces of glacial action, characteristic associations 
of plants and animals in their natural surroundings, rare species of 
the indigenous Hora and fauna, and other natural objects of interest 
or beauty. Although preservation has often been suggested, the 
actual achievements are disappointingly small. Conwentz here sup- 
plies what is much needed, a concise account of what has been 
done, and what can be done towards preserving these natural mo¬ 
numents. The author’s official position in Prussia has given scope 
to his great enthusiasm in this direction, and his results already 
published in German are re-stated. Naturally he directs most atten¬ 
tion to what has been done in the English-speaking countries. Under 
the title “Nature threatened”, evidence is given that in many direc- 
tions extinction and destruction have made great havoc, but that 
with immediate action much may be done towards preservation. 
“Nature protected” deals with protective measures. The aims to 
which efforts should be directed are: a) to establish registers and to 
record on maps the natural monuments; b) to preserve them in 
loco; c) to publish accounts of them. 
The book contains an excellent account of protection in Britain; 
by the government in the case of the Forest of Dean, Windsor 
Forest and New Forest; by public corporations in acquiringplaces 
like Hampstead Heath, Epping Forest, Burnham Beeches, 
etc. near London, and a fossil park in Glasgow; and by the 
National Trust, a limited liability Company which has been instru¬ 
mental in preserving by purchase and otherwise a number of places 
of beauty and interest throughöut England. As regards registration 
of natural monuments, much has been done by the Ordnance and 
Geological Surveys, and the author draws special attention to the 
maps and memoirs of members of the Central Committee for the 
Survey and Study of British Vegetation. In the British Colonies 
protection has been effected by prohibition of shooting wild animals 
in parts of Uganda, by establishing Parks as in the Matoppo 
Mountains, and in Australia and New Zealand. In America 
there are the National Parks — the Sequoia, the Yosemite, the 
Mount Rainier, etc. What has been done in German)", France. 
