MICROSCOPY. 817 
that one entomologist got hold of a hind wing and found that it 
had two tails, and so full of his important discovery he figures 
and describes his fragment as P. bicaudatus Mint; another finds a 
head with the antennz attached, and these are obviously more club- 
shaped than the known species, and of course it is P. clavatus Mint; 
the body falls into the hands of a third, and it is thick and short 
and blunt, and easily distinguished from Machaon, so it becomes 
P. truncatus Mmi ; the fore wing turns up, and it has got blue lines 
and spots and it would be absurd not to give this new species a 
name, and it is P. ceruleus Mum; but the body is investigated by 
an entomologist with an anatomical bias, and he makes some im- 
portant observations deserving to be published; and the subject 
must have a name, so it becomes P. intestinalis Muni; and to ter- 
minate an illustration which might be carried to any extent, the 
caterpillar is found in a field of carrots; a discovery so important 
must be published at once, and it is P. carrote Mum. . The absurd- 
ity of such proceedings is apparent from such an illustration as 
this, but in fossil botany the terrible reality has to be encountered, 
and not only roots, stems, branches, leaves and fruit get different 
names, but different states of the same stem receive. different 
generic and specific names.” 
DEVELOPMENT OF VEGETABLE AND ANIMAL Lire.— Dr. T. C. 
Hilgard sums up his peculiar views on this subject in a recent 
lecture before the New Orleans Academy of Sciences. He recog- 
nizes no such classes as Protophyta and Protozoa; but states that 
“all the so-called infusoria, all the protozoa, protophyta and fresh 
water algæ, so cailed, are severally and collectively in all known 
cases, the immature but even thus self multiplying germs of higher 
(or adult) forms of plants and animals, otherwise well known 
for themselves.” Some of the observations leading to these con- 
clusions have been already published, and others are promised 
ìn the Proc. A. A. A. S. for 1871. Somewhat similar views were 
published by Metcalf Johnson, in the Monthly Microscopical 
Journal. Though not at present received by scientific men, to 
any extent, these theories must be admitted to be not only 
ingenious, but suggestive of further investigation. 
Tae Levcocyres.—Prof. Hoppe-Seyler’s recent investigations of 
the white corpuscles of blood, lymph and pus, give somewhat novel 
and very interesting results.. Their original identity is admitted, 
