Illustration of a squid from Histoire naturelle, générale et particulière des céphalopodes acétabulifères vivants et fossiles t.2 [Atlas] (Férussac, 1835). The text lists the species name as Cranchia bouelliana but internet searches for this name turn up only this same illustration, so it is possible that the squid illustrated here is incorrectly categorized.

Stonefish are a genus of venomous and potentially deadly fish found in the coastal regions of the Indo-Pacific. Stonefish have potent neurotoxins secreted from glands at the base of their needle-like dorsal fin spines which stick up when disturbed or threatened. Stings are painful and potentially lethal in humans.

Illustration from Zhengyan Hu’s Shi zhu zhai shu hua pu v.2 (1879).

2019 November 16

The Star Streams of NGC 5907 Image Credit & Copyright: R Jay Gabany (Blackbird Observatory) - collaboration; D.Martinez-Delgado(IAC, MPIA), J.Penarrubia (U.Victoria) I. Trujillo (IAC) S.Majewski (U.Virginia), M.Pohlen (Cardiff)

Explanation: Grand tidal streams of stars seem to surround galaxy NGC 5907. The arcing structures form tenuous loops extending more than 150,000 light-years from the narrow, edge-on spiral, also known as the Splinter or Knife Edge Galaxy. Recorded only in very deep exposures, the streams likely represent the ghostly trail of a dwarf galaxy - debris left along the orbit of a smaller satellite galaxy that was gradually torn apart and merged with NGC 5907 over four billion years ago. Ultimately this remarkable discovery image, from a small robotic observatory in New Mexico, supports the cosmological scenario in which large spiral galaxies, including our own Milky Way, were formed by the accretion of smaller ones. NGC 5907 lies about 40 million light-years distant in the northern constellation Draco.

1400 year old ginkgo tree.

 地點：陝西省西安市古觀音禪寺