It takes the average reader 5 hours and 54 minutes to read A Monograph of the Sub-class Cirripedia by Charles Darwin
Assuming a reading speed of 250 words per minute. Learn more
Metamorphoses.-I will here briefly describe the Metamorphoses, as far as known, common to all Cirripedia, but more especially in relation to the present family. I may premise, that since Vaughan Thompson's capital discovery of the larvæ in the last stage of development in Balanus, much has been done on this subject: this same author subsequently published in the 'Philosophical Transactions, ' an account of the larvæ of Lepas and Conchoderma (Cineras) in the first stage; and seeing how totally distinct they were from the larva of the latter stage in Balanus, he erroneously attributed the difference to the difference in the two families, instead of to the stage of development. Burmeister first showed, and the discovery is an important one, that in Lepas the larvæ pass through two totally different stages. This has subsequently been proved by implication to be the case in Balanus, by Goodsir, who has given excellent drawings of the larva in the first stage; and quite lately, Mr. C. Spence Bate,
A Monograph of the Sub-class Cirripedia by Charles Darwin is 352 pages long, and a total of 88,704 words.
This makes it 119% the length of the average book. It also has 108% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 8 hours and 4 minutes to read A Monograph of the Sub-class Cirripedia aloud.
A Monograph of the Sub-class Cirripedia is suitable for students ages 12 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
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