108 
POPULAR SCIENCE REVIEW. 
that in making a quotation from the general account of the Onto- 
geny of the Myr-etozoa, as elicited by De Bary, delivered by Prof. 
Allman to the British Association meeting in the year 1869, he 
remarks : * It is much to he regretted that the Professor should 
not mention the species presenting such unusual and interesting 
phenomena.’ Had Mr. Massie consulted the two authorities 
cited, he would have discovered that the developmental pheno- 
mena referred to were traced in connexion with no less than 
twelve well-known species, a list of which is herewith given : — 
Didymium Libertianum, De Bary = Chondrioderma difforme, Rtfki. 
Stemonitis obtusata, Fr. = Comatricha Friesiana, Rtfki. 
Stemonitis fusca, Roth, 
JEthalium septicum, Fr. — Fuligo varians, Somm. 
Enerthenema papillata , Bourn. 
Arcyria punicea, Pers. 
Trichia varia, Pers. 
Ly cogala epidendron , Fr. 
Didymium serpula , Fr. 
Didymium leucopus, Fr. = Physarum leucopus, Rtfki. 
Physarum album, Fr. = Condrioderma difforme , Rtfki. 
Licea pannorum, Wallroth. 
In the two plates accompanying this article, the writer 
has further reproduced from the voluminous drawings of MM. De 
Bary and Cienkowski, their most characteristic illustrations of 
the developmental phases of some half-a-dozen of the above- 
named species ; in all of which it is clearly shown that the 
spores give birth to monadiform germs, out of which, through 
further development and coalescence, the repent amoebiform 
plasmodia, and subsequently the fungus-like sporangia, are 
constructed. 
Finally, since the Editor of ‘Grevillea’ has determined to 
repudiate this testimony, he declares that in order to establish 
the animal nature of the Myxomycetes, it is requisite to produce 
evidence of a more substantial kind than the mere citation of 
De Bary and Cienkowski, suggesting in a previous paragraph 
that the present writer has no practical acquaintance with the 
organisms under discussion, but has simply ‘ based his theory upon 
the figures he has observed in illustrated books.’ Unfortunately 
for this intended overwhelming argument, it happens that even 
previous to the publication of his views in favour of their zoo- 
logical affinities, the writer was by no means unacquainted with 
representatives of this interesting group. Examples of Cratcrium 
pyriforme (named by Dr. Cooke) and Bcidhamia inaurata, collected 
some time since and lately examined, assisted him to arrive at the 
opinion submitted. This examination, admittedly, was restricted 
to the matured Sporangia and their component elements, the 
