518 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
just as apt to develop irregularly in regenerating as are the tissues that 
have developed irregularities during embryonic growth. In fact, one 
might say, that the tissues inherit a strong tendency to regenerate normal 
metameres, but the means at command are so imperfect that abnormal 
results are frequent. Rightly thinking that, before any conclusion can 
be reached as to the value of irregularities seen on the surface, the 
internal organs should be examined, the author proceeded to make a 
study of the modifications of internal structures, and especially of the 
arrangement of the septa. A few have been selected for description ; 
cases which puzzled the author himself, and which he cannot pretend to 
entirely explain, are some of those in which the internal and external 
spirals do not agree. The greater number of cases of false union seem 
to be due to the imperfect joining of the mesodermic blocks, while the 
ectodermic grooves mould themselves on the internal arrangement. An 
account is given of the modification in the antennae of Arthropods. The 
abnormal metamerism of a locust is discussed. Before summarising 
and discussing his results and comparing them with those of other 
writers, the author gives an account of his study of colour-bands of 
Echinoderms, and describes his experiments on regeneration in earth- 
worms. 
Teratogenic Influence of Alcohol on Eggs.* — M. Ch. Fere has made 
numerous experiments as to the abnormalities produced by submitting 
hens’ eggs to vapours or injections of alcohol and other reagents. 
The experiments are thus summarised : — 
Number 
of Eggs. 
Nature of Injection. 
Percentage. 
Normal. 
Undeveloped. 
Monstrous. 
84 
Ethylic alcohol 
63-09 
15*47 
21*43 
84 
Alcoholic solution of absinth .. 
25 
30*97 
44 
24 
Ethylic alcohol 
62*5 
16*66 
20*83 
24 
Alcoholic solution of anise 
41*66 
25 
33*33 
24 
Alcoholic solution of absinth . . 
16*66 
21*43 
62*5 
The facts are probably of human interest in connection with heredity 
in the case of alcoholism and the like. 
Aid to Bibliography of Zoology, f — Drs. P. Schiemenz and E. 
Schoebel have prepared an index to the indices of the Naples Zoological 
Reports for the years 1886 to 1890. For the years with which it deals 
this is one of the most complete subject-indices that can be imagined. 
There is no need to tell the worker of what great assistance it will be 
to him, and especially to the worker whose years are getting on and who 
finds that he does not easily remember the events of more recent years. 
* Journ. de l’Auat. et de Physiol., xxxi. (1895) pp. 161-86. 
t ‘ Autoren- und Sachregister zu den Zoologischen Jahresberichten fur 1886- 
1890,’ Berlin, 1895, 8vo, 365 pp. 
